BSNL TTA(Je) Online Test Series 2
. INSTRUCTIONS
1. NUMBER OF QUESTIONS 200
2. HAS A TIME LIMIT OF 180 MINUTES
3. HAS A PASS MARKS OF 30%
4. QUESTIONS PER PAGE 1
5. EACH QUESTIONS HAS 1 MARKS
6. NEGATIVE MARKING FOR EACH QUESTIONS 0.25
7. WILL ALLOW TO YOU GO BACK ,SKIP AND CHANGE YOUR ANSWERS
8. WILL ALLOW TO YOU PRINT OUT YOUR RESULT AND CERTIFICATE AFTER PUBLISHING OF RESULT
9. WILL ALLOW TO YOU PRINT OUT YOURS RESPONSE SHEET WITH CORRECT ANSWER KEY AND EXPLANATION AFTER PUBLISHING OF RESULT
10. WE WILL PROVIDE YOURS RESULT,CERTIFICATE AND YOUR RESPONSE SHEET TO YOURS EMAIL ID AT END OF ONLINE TEST AFTER PUBLISHING OF RESULT
11. Read moreBSNL TTA ONLINE TEST SERIES WILL AVAILABLE FROM 05/09/2016(4PM) TO
06/09/2016(7PM)
12. RESULT WILL PUBLISH ON 06/09/2016(8PM) ON WWW. ALLEXAMREVIEW. COM
.
Questions and Answers
- 1.
Which one is not correctly matched
- A.
Zebra-Mare
- B.
Whale-Cow
- C.
Sheep-Ewe
- D.
Rat-Sow
Correct Answer
D. Rat-SowExplanation
The given options are pairs of animals and their respective names for males and females. However, the pair "Rat-Sow" is not correctly matched because a sow is a female pig, not a female rat.Rate this question:
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- 2.
The switch is ___the door.
- A.
To
- B.
From
- C.
Up
- D.
By
Correct Answer
D. ByExplanation
The word "by" is the correct answer because it indicates that the switch is located near or next to the door.Rate this question:
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- 3.
He was sworn ______as the president of the students Unions.
- A.
Off
- B.
At
- C.
In
- D.
Out
Correct Answer
C. InExplanation
The correct answer is "in". In this context, "in" is used to indicate the position or status someone takes on. So, the sentence means that he took on the position or status of being the president of the student Unions.Rate this question:
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- 4.
Pick out the correct sentence
- A.
There are shop near my house
- B.
There is shops near my house
- C.
There are a shop near my house
- D.
There is a shop near my house
Correct Answer
D. There is a shop near my houseExplanation
The correct sentence is "there is a shop near my house." This is because the subject "shop" is singular, so it should be followed by the singular verb "is." Additionally, the use of "a" before "shop" is necessary to indicate that there is one shop near the speaker's house.Rate this question:
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- 5.
Find out the error
- A.
One of the students
- B.
Are not going
- C.
On a historical tour
- D.
No error
Correct Answer
B. Are not goingExplanation
The error in this sentence is the incorrect subject-verb agreement. The subject "one of the students" is singular, so it should be followed by the singular verb "is" instead of the plural verb "are." Therefore, the correct form should be "one of the students is not going on a historical tour."Rate this question:
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- 6.
Which one word is verb
- A.
Sympathy
- B.
Sympathise
- C.
Sympathetic
- D.
Sympathieser
Correct Answer
B. SympathiseExplanation
The correct answer is "Sympathise" because it is the only word in the given options that functions as a verb. The other words, "Sympathy," "Sympathetic," and "Sympathieser," are nouns or adjectives. To sympathize means to show understanding or compassion towards someone else's feelings or experiences, which is an action typically associated with a verb.Rate this question:
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- 7.
________gentleman came to meet you.
- A.
Any
- B.
A
- C.
Those
- D.
These
Correct Answer
B. AExplanation
The correct answer is "a" because "gentleman" is a singular noun and requires the indefinite article "a" before it. The other options ("any," "those," "these") are either incorrect or do not match the singular form of the noun.Rate this question:
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- 8.
Which one is not a correct match
- A.
Bom di la-Arunachal Pradesh
- B.
Shipki la-Jammu &Kashmir
- C.
Mana and Niti-Uttarakhand
- D.
Jelep La-Sikkim
Correct Answer
B. Shipki la-Jammu &KashmirExplanation
The correct answer is Shipki la-Jammu & Kashmir. This is because Shipki la is actually located in Himachal Pradesh, not Jammu & Kashmir. The other options are correct matches, with Bom di la located in Arunachal Pradesh, Mana and Niti located in Uttarakhand, and Jelep La located in Sikkim.Rate this question:
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- 9.
The persian translation of MAhabharata, which was done in 16th century is called
- A.
Badshahnama
- B.
Hamzanama
- C.
Razmanama
- D.
Alamgirnama
Correct Answer
C. RazmanamaExplanation
The Persian translation of the Mahabharata, which was completed in the 16th century, is known as Razmanama.Rate this question:
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- 10.
Which Indian state has been declared as the first Digital state of India
- A.
Maharashtra
- B.
Karnataka
- C.
Goa
- D.
Kerala
Correct Answer
D. KeralaExplanation
Kerala has been declared as the first digital state of India because it has made significant advancements in digital infrastructure and connectivity. The state has implemented various initiatives such as the "Kerala Fibre Optic Network" which provides high-speed internet connectivity to every household, and the "e-District" project which aims to deliver government services digitally. Kerala has also been successful in promoting digital literacy and ensuring access to digital services in rural areas. These efforts have positioned Kerala as a leader in digital transformation and have earned it the recognition of being the first digital state in India.Rate this question:
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- 11.
India first semi high speed train is running between
- A.
Delhi to agra
- B.
Jaipur to delhi
- C.
Gawaliar to agra
- D.
Ahmdabad to mumbai
Correct Answer
A. Delhi to agraExplanation
The correct answer is Delhi to Agra. This is because the question is asking about the route of India's first semi high-speed train, and the train is running between Delhi and Agra.Rate this question:
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- 12.
India first Muslim woman chief minister is
- A.
Fatima bibi
- B.
Mahbooba Mufti
- C.
Alam bibi
- D.
Syeda Anwara Taimur
Correct Answer
D. Syeda Anwara TaimurExplanation
Syeda Anwara Taimur is the correct answer for the first Muslim woman chief minister of India. She served as the Chief Minister of Assam from December 1980 to June 1981. Taimur's appointment was significant as she became the first and only Muslim woman to hold this position in India.Rate this question:
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- 13.
Asia's biggest Telescope inaugurated at
- A.
Leh
- B.
Udaipur
- C.
Dehradoon
- D.
Sonipath
Correct Answer
B. UdaipurExplanation
The correct answer is Udaipur. This suggests that Udaipur is the location where Asia's biggest telescope was inaugurated.Rate this question:
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- 14.
Parallel lines on Glob is known as
- A.
Longitudes
- B.
Latitudes
- C.
Equator
- D.
All of these
Correct Answer
B. LatitudesExplanation
Parallel lines on a globe are known as latitudes. Latitudes are imaginary lines that run horizontally around the Earth, parallel to the equator. They are used to measure distances north or south of the equator and are expressed in degrees. These lines help in locating specific points on the Earth's surface and are essential for navigation and mapping purposes.Rate this question:
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- 15.
Which article is related to Right to Education
- A.
Article 23
- B.
Article 24
- C.
Article 29
- D.
Article 30
Correct Answer
C. Article 29Explanation
Article 29 of the Universal Declaration of Human Rights is related to the Right to Education. This article states that everyone has the right to education, which should be directed to the full development of the human personality and the strengthening of respect for human rights and fundamental freedoms. It emphasizes that education should promote understanding, tolerance, and friendship among all nations, racial or religious groups. Additionally, it states that parents have the right to choose the kind of education that shall be given to their children.Rate this question:
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- 16.
How many sports will be played during Rio Paralympic Games,2016
- A.
20
- B.
27
- C.
42
- D.
23
Correct Answer
D. 23Explanation
The Rio Paralympic Games in 2016 featured a total of 23 sports.Rate this question:
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- 17.
Who is writer of book Courage and Commitment
- A.
Margaret Alva
- B.
Sumitra Mahajan
- C.
Smriti Irani
- D.
Mamta singh
Correct Answer
A. Margaret AlvaExplanation
Margaret Alva is the correct answer because she is the writer of the book "Courage and Commitment".Rate this question:
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- 18.
Who is not a recipients of Rajiv Gandhi Khel Ratna Award 2016
- A.
P.V. Sindhu
- B.
Dipa Karmakar
- C.
Sakshi Malik
- D.
Saina Nehval
Correct Answer
D. Saina NehvalExplanation
Saina Nehwal is not a recipient of the Rajiv Gandhi Khel Ratna Award 2016.Rate this question:
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- 19.
Who among the following is the author of the book titled 'The White Tiger"?
- A.
Chetan Bhagat
- B.
Anish Tripathi
- C.
Anita Desai
- D.
Aravind Adiga
Correct Answer
D. Aravind AdigaExplanation
Aravind Adiga is the author of the book titled 'The White Tiger'.Rate this question:
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- 20.
Which of the following firms has introduced Android Skilling Program for India to train two million developers over the next three years?
- A.
Samsun
- B.
Xiaomi
- C.
Google
- D.
Huawei
Correct Answer
C. GoogleExplanation
Google has introduced the Android Skilling Program for India to train two million developers over the next three years. This program aims to provide the necessary skills and knowledge to developers in India to create high-quality Android apps. By offering this program, Google is investing in the development of the Indian tech industry and fostering innovation in mobile app development.Rate this question:
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- 21.
Co initial Vectors are
- A.
Two or more force vectors having the same initial point
- B.
Two or more vectors having the same initial point
- C.
Two or more vectors having the same final point
- D.
Two or more pseudo vectors having the same initial point
Correct Answer
B. Two or more vectors having the same initial pointExplanation
The correct answer is "Two or more vectors having the same initial point". This means that the vectors start at the same point in space. The initial point is the starting point of the vector, and when multiple vectors have the same initial point, it indicates that they all originate from the same location. This is a common concept in vector analysis, where vectors are often represented as arrows with a starting point and a direction.Rate this question:
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- 22.
Vectors A and B are Co linear
- A.
If they are parallel to the same line irrespective of their magnitudes and directions.
- B.
If they are have equal magnitude
- C.
If they are in the same line
- D.
If the direction cosines of one are negatives of the other
Correct Answer
A. If they are parallel to the same line irrespective of their magnitudes and directions.Explanation
Vectors A and B are co-linear if they are parallel to the same line, regardless of their magnitudes and directions. This means that both vectors have the same direction or are in opposite directions, but they are still parallel to the same line. The magnitudes of the vectors and their specific directions do not matter as long as they are parallel to the same line.Rate this question:
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- 23.
For dot product of vector which of the following is not correct?
- A.
A.B=B.A
- B.
A(B+C)=(A+B)C
- C.
A.A=0
- D.
A..A=A²
Correct Answer
C. A.A=0Explanation
The dot product of a vector with itself is equal to the square of its magnitude. Therefore, A.A is equal to the square of the magnitude of vector A, which is always greater than or equal to zero. It cannot be equal to zero unless vector A is the zero vector. Hence, the statement A.A=0 is not correct.Rate this question:
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- 24.
Find out the multiplication of complex number (4+5i) with its conjugate complex number
- A.
31
- B.
41
- C.
9
- D.
5
Correct Answer
B. 41Explanation
The multiplication of a complex number (a+bi) with its conjugate complex number (a-bi) results in a real number. In this case, the complex number is (4+5i) and its conjugate is (4-5i). When we multiply these two complex numbers, we get (4+5i)(4-5i) = 16 - 20i + 20i - 25i^2 = 16 + 25 = 41. Therefore, the correct answer is 41.Rate this question:
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- 25.
I⁻¹²
- A.
-i
- B.
I
- C.
1
- D.
0
Correct Answer
C. 1Explanation
The given expression is i⁻¹². The exponent -1² means that -1 is squared, which equals 1. Since i represents the imaginary unit, the value of i is the square root of -1. Therefore, i squared is equal to -1. So, the expression i⁻¹² can be simplified to -1. However, the given answer is 1, which is incorrect.Rate this question:
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- 26.
Sum of (-3a+2bi),(4a+6bi) and (7a-4bi) is
- A.
-3bi√3a
- B.
-3a/√3bi
- C.
8a+4bi
- D.
8a-4bi
Correct Answer
C. 8a+4biExplanation
The given question asks for the sum of three complex numbers: (-3a+2bi), (4a+6bi), and (7a-4bi). To find the sum, we add the real parts and the imaginary parts separately. The real parts are -3a, 4a, and 7a, which add up to 8a. The imaginary parts are 2bi, 6bi, and -4bi, which add up to 4bi. Therefore, the sum of the three complex numbers is 8a+4bi.Rate this question:
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- 27.
Find out value of x and yfor (2y-6)+(4x-20)i=0
- A.
Y=3 x=5
- B.
X=5 y= 3
- C.
X=8 y=120
- D.
Y=120 x=8
Correct Answer
B. X=5 y= 3Explanation
The given equation is a complex number equation in the form (2y-6)+(4x-20)i=0. To solve this equation, we need to equate the real and imaginary parts to zero separately. From the real part, we have 2y-6=0, which gives y=3. From the imaginary part, we have 4x-20=0, which gives x=5. Therefore, the value of x is 5 and the value of y is 3.Rate this question:
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- 28.
Find out the distance between point (2,3) and (4,1)
- A.
2√2
- B.
4√2
- C.
√2
- D.
√8
Correct Answer
A. 2√2Explanation
The distance between two points in a coordinate plane can be found using the distance formula, which is derived from the Pythagorean theorem. The formula is √((x2-x1)^2 + (y2-y1)^2). In this case, the coordinates of the two points are (2,3) and (4,1). Plugging these values into the formula, we get √((4-2)^2 + (1-3)^2) = √(2^2 + (-2)^2) = √(4 + 4) = √8 = 2√2. Therefore, the correct answer is 2√2.Rate this question:
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- 29.
Find out distance between point(0,cosθ) and (sinθ,0)
- A.
1
- B.
Sinθ+cosθ
- C.
0
- D.
1/2(sinθ+cosθ)
Correct Answer
A. 1Explanation
The given answer, 1, is the correct distance between the points (0, cosθ) and (sinθ, 0). The distance between two points in a two-dimensional coordinate system can be calculated using the distance formula, which is the square root of the sum of the squares of the differences in the x-coordinates and the y-coordinates of the two points. In this case, the x-coordinate difference is sinθ - 0 = sinθ, and the y-coordinate difference is 0 - cosθ = -cosθ. Therefore, the distance is √(sin²θ + cos²θ), which simplifies to 1.Rate this question:
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- 30.
Dy/dx(ax²+bx+c)
- A.
2ax+c
- B.
2ax+b
- C.
Ax³+bx²+c
- D.
Ax³+bx²
Correct Answer
B. 2ax+bExplanation
The given expression represents the derivative of a quadratic function ax^2 + bx + c with respect to x. To find the derivative, we apply the power rule, which states that the derivative of x^n is nx^(n-1). Applying this rule, the derivative of ax^2 is 2ax, and the derivative of bx is b. Therefore, the correct answer is 2ax + b.Rate this question:
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- 31.
Dy/dx sec⁻¹ x
- A.
1/x(√x²-1)
- B.
-1/x(√x²-1)
- C.
1/(√x²-1)
- D.
-1/(√x²-1)
Correct Answer
A. 1/x(√x²-1)Explanation
The given expression is dy/dx sec⁻¹ x. To find the derivative of sec⁻¹ x, we can rewrite it as arccos(1/x). Using the chain rule, we differentiate arccos(1/x) as -1/(√x²-1) * d(1/x)/dx. Simplifying further, we get -1/(√x²-1) * (-1/x²), which gives us 1/x(√x²-1). Therefore, the correct answer is 1/x(√x²-1).Rate this question:
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- 32.
∫15x⁴
- A.
15x³
- B.
3x³+c
- C.
3x⁵+c
- D.
5x⁵
Correct Answer
C. 3x⁵+cExplanation
The given integral is ∫15x⁴. When we integrate x⁴, we add 1 to the exponent and divide by the new exponent. Therefore, integrating x⁴ gives us x⁵/5. Since there is a constant term, c, in the answer choices, we include it as +c. Thus, the correct answer is 3x⁵+c, as it matches the result of integrating 15x⁴.Rate this question:
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- 33.
In case of even symmetry of Fourier series
- A.
Cosine term is zero
- B.
Constant term is zero
- C.
Sine term is zero
- D.
All term are zero
Correct Answer
C. Sine term is zeroExplanation
In the case of even symmetry of a Fourier series, the function being represented is symmetric about the y-axis. This means that the function is unchanged when reflected across the y-axis. In a Fourier series, the sine terms represent the odd components of the function, which are responsible for its asymmetry. Since the function is symmetric in this case, there are no odd components, and therefore the sine terms are zero.Rate this question:
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- 34.
A matrix having all diagonal element is equal and all other element is zero known as
- A.
Scalar matrix
- B.
Sub matrix
- C.
Lower triangular matrix
- D.
Upper triangular matrix
Correct Answer
A. Scalar matrixExplanation
A scalar matrix is a matrix in which all the diagonal elements are equal and all the other elements are zero. Therefore, a matrix having all diagonal elements equal and all other elements as zero is known as a scalar matrix.Rate this question:
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- 35.
Laplace of sinh at
- A.
S/s²+a²
- B.
S²-a²/s
- C.
A/s²+a²
- D.
A/s²-a²
Correct Answer
D. A/s²-a²Explanation
The correct answer is a/s²-a² because the Laplace transform of sinh(t) is (e^t - e^(-t))/2, which can be rewritten as (e^t/2) - (e^(-t)/2). Taking the Laplace transform of this expression, we get (1/2)*(1/(s-1/2)) - (1/2)*(1/(s+1/2)), which simplifies to (1/2)*((2s)/(s²-1/4)) = s/(s²-1/4) = a/s²-a².Rate this question:
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- 36.
Which one is not a fundamental unit
- A.
Candela
- B.
Radian
- C.
Mole
- D.
Newton
Correct Answer
D. NewtonExplanation
The question is asking for the unit that is not considered a fundamental unit. The fundamental units are the basic units of measurement in the International System of Units (SI). The candela, radian, and mole are all fundamental units, representing luminous intensity, plane angle, and amount of substance, respectively. However, the newton is not a fundamental unit. It is derived from the fundamental units of kilogram, meter, and second, representing force. Therefore, the correct answer is newton.Rate this question:
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- 37.
Which one is not a unit of length
- A.
Light year
- B.
Solar day
- C.
Astronomic unit
- D.
Parsec
Correct Answer
B. Solar dayExplanation
A solar day is not a unit of length, but a unit of time. It represents the time it takes for the Earth to complete one rotation on its axis relative to the Sun. In contrast, a light year, an astronomical unit, and a parsec are all units of length used to measure vast distances in space.Rate this question:
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- 38.
Newton per meter is unit of
- A.
Viscosity
- B.
Density
- C.
Pressure
- D.
Surface tension
Correct Answer
D. Surface tensionExplanation
Newton per meter (N/m) is the unit of surface tension. Surface tension is a property of liquids that arises due to the cohesive forces between the molecules at the surface. It is defined as the force per unit length acting perpendicular to an imaginary line drawn on the surface. The unit N/m represents the force (Newton) required to stretch a line of length 1 meter on the surface. Therefore, the correct answer is surface tension.Rate this question:
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- 39.
Which one is a unit of sound intensity
- A.
Phone
- B.
Bel
- C.
Lux
- D.
Lumen
Correct Answer
B. BelExplanation
The bel is a unit of sound intensity. It is a logarithmic unit that measures the ratio of the intensity of a sound wave to a reference level. The bel is named after Alexander Graham Bell and is commonly used in telecommunications and acoustics.Rate this question:
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- 40.
A light wave of 50 Hz is traveling with speed of 200 m/s then it wave length in meter is
- A.
1000
- B.
0.25
- C.
4
- D.
200
Correct Answer
C. 4Explanation
The wavelength of a wave can be calculated by dividing the speed of the wave by its frequency. In this case, the speed of the wave is given as 200 m/s and the frequency is given as 50 Hz. By dividing these two values, we get a wavelength of 4 meters.Rate this question:
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- 41.
Which one is not correct pair
- A.
Neutron-chadwick
- B.
Positron-anderson
- C.
Proton -ukawa
- D.
Neutrino-pawli
Correct Answer
C. Proton -ukawaExplanation
The given question is asking for the incorrect pair among the options provided. The correct answer is "proton - ukawa." This is because while the other pairs correctly match a particle with its corresponding scientist or discoverer (neutron - Chadwick, positron - Anderson, neutrino - Pawli), the pair "proton - ukawa" is incorrect. The proton was actually discovered by Ernest Rutherford, not Ukawa.Rate this question:
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- 42.
A group element with same atomic weight and different atomic number is called
- A.
Isotopes
- B.
Isobars
- C.
Photons
- D.
Neutrino
Correct Answer
B. IsobarsExplanation
Isobars are group elements with the same atomic weight but different atomic numbers. This means that although they have the same number of protons and neutrons, they have a different number of protons, resulting in different atomic numbers. Isobars have similar chemical properties but different physical properties due to the difference in atomic numbers.Rate this question:
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- 43.
Which chain reaction use in Atomic Reactor
- A.
Controlled
- B.
Uncontrolled
- C.
Both type
- D.
None
Correct Answer
A. ControlledExplanation
In an atomic reactor, a controlled chain reaction is used. This means that the reaction is carefully regulated and maintained at a steady rate. This is achieved by controlling the amount of fuel and the rate at which neutrons are released and absorbed. This allows for a controlled release of energy, which is essential for the safe and controlled operation of the reactor. An uncontrolled chain reaction, on the other hand, would result in a rapid and uncontrollable release of energy, leading to a potential disaster. Therefore, the use of a controlled chain reaction is crucial in atomic reactors.Rate this question:
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- 44.
Optical fiber is based on
- A.
Reflection of light
- B.
Refraction of light
- C.
Total internal reflection of light
- D.
Dispersion of light
Correct Answer
C. Total internal reflection of lightExplanation
Optical fiber is based on total internal reflection of light. This is because when light enters the fiber at an angle greater than the critical angle, it undergoes total internal reflection and continues to propagate through the fiber. This phenomenon allows the light signals to travel long distances without significant loss or distortion. The other options, reflection of light, refraction of light, and dispersion of light, are not the primary mechanisms that enable the functioning of optical fibers.Rate this question:
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- 45.
E=mc2 is known as
- A.
Newton atomic law
- B.
Ansteen mass energy relation
- C.
Binding energy equation
- D.
All of these
Correct Answer
B. Ansteen mass energy relationExplanation
The correct answer is "Ansteen mass energy relation." This equation, E=mc2, is known as the Ansteen mass energy relation because it represents the equivalence between mass and energy. It states that energy (E) is equal to mass (m) multiplied by the speed of light squared (c2). This equation was proposed by Albert Einstein in his theory of relativity and is one of the most famous equations in physics. It revolutionized our understanding of the relationship between mass and energy.Rate this question:
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- 46.
In which of these is reverse recovery time nearly zero?
- A.
Zener diode
- B.
Tunnel diode
- C.
Schottky diode
- D.
PIN diode
Correct Answer
C. Schottky diodeExplanation
Schottky diodes have a nearly zero reverse recovery time. Reverse recovery time refers to the time it takes for a diode to transition from the conducting state to the non-conducting state when the voltage across it is reversed. In Schottky diodes, this transition is very fast because they have a metal-semiconductor junction, which allows for quicker charge removal compared to other types of diodes. This characteristic makes Schottky diodes suitable for high-frequency applications where fast switching is required.Rate this question:
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- 47.
A transistor has a current gain of 0.99 in the CB mode. Its current gain in the CC mode is
- A.
100
- B.
99
- C.
1.01
- D.
0.99
Correct Answer
A. 100Explanation
In the common base (CB) mode, the current gain of the transistor is given as 0.99. The current gain in the common collector (CC) mode is generally higher than in the CB mode. Therefore, the most likely explanation is that the current gain in the CC mode is significantly higher than 0.99, which is represented by the answer 100.Rate this question:
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- 48.
In an n channel JFET, the gate is
- A.
N type
- B.
P type
- C.
Either n or p
- D.
Partially n & partially p
Correct Answer
B. P typeExplanation
The gate of an n-channel JFET is p-type. In a JFET, the gate is made up of a p-type material, while the source and drain are made up of n-type materials. The p-type gate forms a reverse-biased pn junction with the n-type channel, creating a depletion region that controls the flow of current through the channel. By applying a voltage to the gate, the width of the depletion region can be adjusted, thereby controlling the conductivity of the channel and the current flowing through the JFET.Rate this question:
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- 49.
The amount of photoelectric emission current depends on
- A.
Frequency of incident radiation
- B.
Intensity of incident radiation
- C.
Both frequency and intensity of incident radiation
- D.
None of these
Correct Answer
B. Intensity of incident radiationExplanation
The amount of photoelectric emission current depends on the intensity of incident radiation. This means that the higher the intensity of the incident radiation, the greater the amount of photoelectric emission current. The frequency of the incident radiation does not have a direct effect on the amount of photoelectric emission current.Rate this question:
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- 50.
Assertion (A): A p-n junction has high resistance in reverse direction.Reason (R): When a reverse bias is applied to p-n junction, the width of depletion layer increases.
- A.
Both A and R are true and R is correct explanation of A
- B.
Both A and R are true but R is not a correct explanation of A
- C.
A is true but R is false
- D.
A is false but R is true
Correct Answer
A. Both A and R are true and R is correct explanation of AExplanation
Both A and R are true and R is the correct explanation of A. When a reverse bias is applied to a p-n junction, the width of the depletion layer increases. This results in a decrease in the number of charge carriers that can pass through the junction, leading to a higher resistance in the reverse direction. Therefore, the increase in the width of the depletion layer is the reason for the high resistance in the reverse direction of a p-n junction.Rate this question:
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