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MOCK TEST 62 SYLLABUS :PHYSICS TIME : 20 MINUTES FULL MARKS : 50*5 = 250 EACH QUESTION CARRIES 5 MARKS , - VE MARKING = - 1 / WRONG ANSWER আজকের মোক টেস্ট নেওয়া হবে রাত 9. 30 PM থেকে , এই মোক টেস্ট দেওয়া যাবে কাল সকাল 11 টা পর্যন্ত OUR FACEBOOK GROUP : DAILY UPDATES CLICK HERE TO JOIN OUR FACEBOOK PAGE : STUDY MATERIALS FOR ALL CLICK HERE TO FOLLOW OUR TELEGRAM CHANNEL LINK : STUDY MATERIALS FOR ALL CLICK HERE TO FOLLOW PSC SCHOOL INSPECTOR GUIDE BOOK + MOCK TESTS CLICK HERE TO DOWNL
- 1.The highest temperature attained by a super conductor is-
- A.
24 K
- B.
138 K
- C.
150 K
- D.
300 K
- 2.The ozone layer absorbs
- A.
Infrared radiation
- B.
Microwaves
- C.
Radio wave
- D.
Ultraviolet rays
- 3.The resistance of a semiconductor on heating
- A.
Remains
- B.
Decreases
- C.
Increases
- D.
None of the above
- 4.The earth’s magnetic field is due to
- A.
Currents circulating inside the core
- B.
Presence of a huge magnet at is centre
- C.
Moving charges in space outside
- D.
None of the above
- 5.Which of the following option represents the consumption of power in ascending order-
- A.
Television, fan, electronic press, electronic kettle
- B.
Television, fan, electronic kettle, electronic press
- C.
Fan, television, electronic press, electronic kettle
- D.
Electronic press, electronic kettle, fan, television
- 6.How does the white light produce in the tube?
- A.
To Heat up the copper wire
- B.
To Heat up the filament
- C.
To accelerate the atoms
- D.
To oscillate molecule
- 7.Full form of C.F.I. is-
- A.
Compact Fluorescent Lamp
- B.
Centrally Fixed Lamp
- C.
Chemical Fluorescent Lamp
- D.
Condensed Fluorescent Lamp
- 8.A device which converts chemical energy into electrical energy is called-
- A.
Battery
- B.
Motor
- C.
Generator
- D.
Moving coil meter
- 9.The filament of bulb is of
- A.
Mercury
- B.
Copper
- C.
Tungsten
- D.
None of these
- 10.The tolerable limit of noise for human being is around-
- A.
45 decibel
- B.
85 decibel
- C.
125 decibel
- D.
155 decibel
- 11.What is the decibel level of sound produced by two persons in conversation?
- A.
About 5 Decibel
- B.
About 10 Decibel
- C.
About 30 Decibel
- D.
About 100 Decibel
- 12.Maximum temperature inside pressure cooker depends on:
- A.
Area of hole on the top and weight kept on it
- B.
Area of hole on the top and food being cooked
- C.
Weight kept on hole at top and food being cooked
- D.
Area of hole on the top only
- 13.A fan produces feeling of comfort during hot weather, because-
- A.
Fan supplies cold air
- B.
Our perspiration evaporates rapidly
- C.
Our body radiates more heat
- D.
Conductivity of air increase
- 14.Xeric condition refers to-
- A.
Low temperature
- B.
Low humidity
- C.
High evaporation
- D.
Extreme temperature
- 15.What is absolute zero temperature?
- A.
The starting point of any temperature scale
- B.
Theoretically the lowest possible temperature
- C.
The temperature at which the vapour of any liquid substance is condensed
- D.
The temperature at which all material are in vapour form
- 16.Which zone of a candle flame is the hottest?
- A.
Dark innermost zone
- B.
Outermost zone
- C.
Middle luminous zone
- D.
Central zone
- 17.The image of the object that we see, forms on the retina of our eyes is—
- A.
always erect
- B.
Always inverted
- C.
Erect or inverted depends upon the intensity of light
- D.
Erect or inverted depends upon the age of the person
- 18.Evening Sun is not as hot as the midday sun. What is the reason?
- A.
In the evening, radiation travel slowly
- B.
In the evening, the temperature of the sun decreases
- C.
Ozone in atmosphere absorbs more light in the evening
- D.
In the evening, radiations travel larger distance through atmosphere
- 19.A body is thrown vertically upwards and then falls back on the ground. When its potential energy is maximum?
- A.
On the ground
- B.
At the maximum height
- C.
During the return journey
- D.
Both on the ground and at the maximum height
- 20.The magnet is strongest near the-
- A.
On equator point from the poles of the magnet
- B.
Ends of the magnet
- C.
Centre of magnet
- D.
None of the above
- 21.A body travelling with a speed of more than the velocity of sound in air is said to travel with—
- A.
Supersonic speed
- B.
Hypersonic speed
- C.
Ultrasonic speed
- D.
Infrasonic speed
- 22.Which of the special technique is used in ships to calculate the depth of ocean beds?
- A.
LASER
- B.
SONAR
- C.
Sonic boom
- D.
Reverberation
- 23.What is the SI unit of electrical conductance?
- A.
Volt
- B.
Watt
- C.
Siemens
- D.
Ampere
- 24.Which of the following is a conductor of electricity?
- A.
Silver
- B.
Copper
- C.
Aluminium
- D.
All of the above
- 25.Why is tungsten used exclusively for the filament of an incandescent lamp?
- A.
Tungsten can be drawn into thin wires which in turn offer high resistance
- B.
Tungsten has a fairly good resistivity
- C.
The melting point of tungsten is very high
- D.
All of these
- 26.Why ammeter is likely to burn out if you connect it in parallel?
- A.
It has high voltage
- B.
It has high resistance
- C.
It has low resistance
- D.
It has low voltage
- 27.What will happen to current passing through a resistor if the potential difference across its ends is doubled and the resistance is halved?
- A.
Becomes four times
- B.
Becomes halved
- C.
Remain unchanged
- D.
Becomes one fourth
- 28.Which of the following has the highest refractive index?
- A.
Glass
- B.
Water
- C.
Pearl
- D.
Diamond
- 29.For a plane mirror, magnification (m)=________
- A.
0
- B.
1
- C.
± 1
- D.
≤ 0
- 30.We can see objects because of which phenomena?
- A.
reflection
- B.
refraction
- C.
Transmission
- D.
Diffraction
- 31.Which has no importance for fuse wire –
- A.
Specific resistance of wire
- B.
Diameter of wire
- C.
Length of wire
- D.
Current passing through the wire
- 32.The specific resistance of a wire varies with its –
- A.
Length
- B.
Cross-section
- C.
Mass
- D.
Material
- 33.The unit of specific resistance is –
- A.
Ohm
- B.
Ohm–1
- C.
Ohm-metre
- D.
Ohm per metre
- 34.How many electrons constitute a current of one microampere –
- A.
6.25 × 10^6
- B.
6.25 × 10^12
- C.
6.25 × 10^9
- D.
6.25 × 10^15
- 35.Good conductors have many loosely bound –
- A.
Atoms
- B.
Protons
- C.
Molecules
- D.
Electrons
- 36.The variable resistance is called –
- A.
Resistor
- B.
Rheostat
- C.
open switch
- D.
None of these
- 37.If the length of a wire is doubled and its cross-section is also doubled, then the resistance will –
- A.
Increase eight times
- B.
Decrease four times
- C.
Become four times
- D.
Remain unchanged
- 38.Instruments can be shielded from outside magnetic effects by surrounding them with
- A.
Iron shield
- B.
Rubber shield
- C.
Brass shield
- D.
Glass shield
- 39.The following is a pseudo-force:
- A.
Centrepetal force
- B.
Centrifugal reaction force
- C.
Centrifugal force
- D.
Strong nuclear force
- 40.The hydraulic brake used in automobiles is a direct application of
- A.
Archimedes’ principle
- B.
Torricellean law
- C.
Bernoulli’s Theorem
- D.
Pascal’s law
- 41.Which instrument is used to measure sound under water ?
- A.
Hygrometer
- B.
Hygroscope
- C.
Hypsometer
- D.
Hydrophone
- 42.Which instrument is used to measure pressure of gases ?
- A.
Manometer
- B.
Machmeter
- C.
Magnetometer
- D.
Micrometer
- 43.Which instrument is used to measure heat radiation ?
- A.
Radar
- B.
Salinometer
- C.
Refractometer
- D.
Radio micrometer
- 44.Which instrument is used to measure strength of direct current ?
- A.
Stroboscope
- B.
Streoscope
- C.
Tangent Galvanometer
- D.
Tachometer
- 45.K. Macmillan invented
- A.
Bicycle
- B.
Barometer
- C.
Calculating Machine
- D.
Centigrade Scale
- 46.Thomas Alva Edison invented
- A.
Cinema
- B.
Cine Camera
- C.
Computer
- D.
Cinematograph
- 47.Alfred Nobel invented
- A.
X ray
- B.
Diesel Engine
- C.
Dynamite
- D.
Dynamo
- 48.David Hughes invented
- A.
Machine Gun
- B.
Microphone
- C.
Microscope
- D.
Motorcycle
- 49.Marie and Pierre Curie invented
- A.
Radio
- B.
Radium
- C.
Radar
- D.
Refrigerator
- 50.Alexander Graham Bell invented
- A.
Telephone
- B.
Telescope
- C.
Television
- D.
Tank
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