Applied Physics 2(Light) (TTA)
. INSTRUCTIONS
1. NUMBER OF QUESTIONS 25
2. HAS A TIME LIMIT OF 15 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
9. WILL ALLOW TO YOU PRINT OUT YOURS RESPONSE SHEET WITH CORRECT ANSWER KEY AND EXPLANATION
10. WE WILL PROVIDE YOURS RESULT,CERTIFICATE AND YOUR RESPONSE SHEET TO YOURS EMAIL ID AT END OF ONLINE TEST
.
.
.
.
Questions and Answers
- 1.
Light can travel in
- A.
Air only
- B.
Vacuum only
- C.
Both air and vacuum
- D.
None of mediums
Correct Answer
C. Both air and vacuumExplanation
Light can travel in both air and vacuum because light is an electromagnetic wave that does not require a medium to propagate. In air, light travels by interacting with the molecules present in the atmosphere. In vacuum, there are no molecules to interact with, but light can still propagate as there is no obstruction. This is why light can travel in both air and vacuum.Rate this question:
-
- 2.
In symbols, formula to calculate refractive index is
- A.
N = c/v
- B.
Rn = l/m
- C.
I = v/l
- D.
N = v/m
Correct Answer
A. N = c/vExplanation
The given formula n = c/v represents the calculation of refractive index. In this formula, n represents the refractive index, c represents the speed of light in a vacuum, and v represents the speed of light in the medium. The refractive index is a measure of how much light is bent when it passes from one medium to another. By dividing the speed of light in a vacuum by the speed of light in the medium, we can determine the refractive index of that medium.Rate this question:
-
- 3.
Image that is created in plane mirror is virtual' is a true statement of plane mirror image
- A.
Right
- B.
Wrong
- C.
May be right or may be wrong
- D.
Neither right nor wrong
Correct Answer
A. RightExplanation
The statement "Image that is created in a plane mirror is virtual" is correct. In a plane mirror, the image formed is virtual, meaning it cannot be projected onto a screen. The image appears to be behind the mirror and is the same size as the object, but reversed from left to right. This is because light rays reflect off the mirror's surface, creating the illusion of an image. Therefore, the answer "Right" is the correct explanation.Rate this question:
-
- 4.
Objects that produce their own light are called
- A.
Luminous objects
- B.
Non-luminous objects
- C.
Transparent objects
- D.
Opaque objects
Correct Answer
A. Luminous objectsExplanation
Luminous objects are those that emit their own light, such as the sun, a light bulb, or a candle flame. They are able to produce light through processes like combustion or the emission of photons. Non-luminous objects, on the other hand, do not emit light and can only be seen by reflecting light from a luminous source. Transparent objects allow light to pass through them without scattering, while opaque objects do not allow light to pass through and reflect or absorb it instead.Rate this question:
-
- 5.
Angle of incidence is equal to angle of reflection is a
- A.
True law of reflection
- B.
False law of reflection
- C.
Neutral law of reflection
- D.
Imaginary angle
Correct Answer
A. True law of reflectionExplanation
The statement "Angle of incidence is equal to angle of reflection" is a true law of reflection. According to this law, when a ray of light reflects off a smooth surface, the angle at which it hits the surface (angle of incidence) will be equal to the angle at which it bounces off (angle of reflection). This law holds true for all smooth surfaces and is a fundamental principle in the study of optics.Rate this question:
-
- 6.
A horizontal line which passes through cortical center of lens is termed as
- A.
Middle axis
- B.
Horizontal axis
- C.
Principal axis
- D.
Imaginary diameter
Correct Answer
C. Principal axisExplanation
The correct answer is principal axis. The principal axis is a horizontal line that passes through the cortical center of the lens. It is an important reference line in optics and is used to determine the focal point and focal length of a lens. The principal axis helps in understanding the behavior of light as it passes through the lens and is crucial in the study of optics and lens design.Rate this question:
-
- 7.
Bend of light rays or image in denser medium is termed as
- A.
Reflection
- B.
Opacation
- C.
Refraction
- D.
Transpiration
Correct Answer
C. RefractionExplanation
Refraction refers to the bending of light rays or image when they pass from one medium to another denser medium. This phenomenon occurs due to the change in speed of light as it travels through different mediums. When light enters a denser medium, it slows down and changes its direction, causing the bending or refraction of light rays. Therefore, the correct answer is Refraction.Rate this question:
-
- 8.
In which lens are light rays brought to focal point?
- A.
Converging lens
- B.
Diverging lens
- C.
Both lenses
- D.
None of lenses
Correct Answer
A. Converging lensExplanation
A converging lens is designed to bring light rays to a focal point. It is thicker in the middle and thinner at the edges, causing the light rays to bend towards the center as they pass through it. This bending of light allows the lens to focus the rays and bring them to a point, known as the focal point. Therefore, a converging lens is the correct answer for this question.Rate this question:
-
- 9.
Total internal reflection occurs when
- A.
Light passes from a denser to a lighter medium
- B.
Light comes into air from vacuum
- C.
Light goes to vacuum from air
- D.
Light passes from more denser to less denser medium
Correct Answer
D. Light passes from more denser to less denser mediumExplanation
Total internal reflection occurs when light passes from a denser to a less dense medium. This phenomenon happens because the angle of incidence is greater than the critical angle, causing the light to be completely reflected back into the denser medium instead of being refracted. This can be observed, for example, when light passes from water to air and the angle of incidence exceeds a certain value, resulting in the light being reflected back into the water.Rate this question:
-
- 10.
Which one of ratios are equal to constant (in refraction)
- A.
Sin r/sin i
- B.
Sin r (sin i)
- C.
Sin i/sin r
- D.
Sin i2/sin r
Correct Answer
C. Sin i/sin rExplanation
The ratio sin i/sin r is equal to a constant in refraction. This is known as Snell's Law, which states that the ratio of the sine of the angle of incidence (i) to the sine of the angle of refraction (r) is constant when light passes from one medium to another. This constant is known as the refractive index and is unique to each pair of media. Therefore, sin i/sin r is the correct ratio that is equal to a constant in refraction.Rate this question:
-
- 11.
Straight line in which light travels is called
- A.
Wave
- B.
Ray
- C.
Path
- D.
Light perimeter
Correct Answer
B. RayExplanation
A straight line in which light travels is called a ray. A ray is a simplified representation of the path that light takes, showing the direction in which it travels. It does not show the actual wave nature of light, but rather the straight path it follows from its source.Rate this question:
-
- 12.
Which one of following gives characteristics of a plane mirror?
- A.
Upright, virtual, inverted, diminished
- B.
Same size, upright, inverted, virtual
- C.
Inverted, same size, real, upright
- D.
Inverted, magnified, virtual, upright
Correct Answer
B. Same size, upright, inverted, virtualExplanation
A plane mirror reflects light in such a way that the image formed appears to be the same size as the object, upright (not flipped), inverted (left-right flipped), and virtual (cannot be projected onto a screen).Rate this question:
-
- 13.
Difference in speed of light in air and in denser medium is termed as
- A.
Reflective index
- B.
Refractive index
- C.
Transactional index
- D.
Density index
Correct Answer
B. Refractive indexExplanation
The correct answer is refractive index. The refractive index is a measure of how much the speed of light changes when it passes from one medium to another. It is a ratio of the speed of light in a vacuum to the speed of light in the medium. The refractive index determines how much light is bent or refracted when it enters a different medium, such as when light passes from air to water or from air to glass.Rate this question:
-
- 14.
A piece of glass with curved surface is termed a
- A.
Biconcave mirror
- B.
Blind mirror
- C.
Lens
- D.
Mirror
Correct Answer
C. LensExplanation
A piece of glass with a curved surface is termed a lens because a lens is a transparent material with at least one curved surface that can refract light, causing it to converge or diverge. Lenses are commonly used in optical devices such as cameras, microscopes, and eyeglasses to focus or magnify light. A biconcave mirror has two curved surfaces that are concave, not suitable for this scenario. A blind mirror is not a term used in optics. While a mirror can have a curved surface, it is specifically designed to reflect light rather than refract it like a lens.Rate this question:
-
- 15.
Image formed by a projector would be
- A.
Inverted, real, diminished
- B.
Virtual, upright, diminished
- C.
Virtual, upright, magnified
- D.
Real, inverted, magnified
Correct Answer
D. Real, inverted, magnifiedExplanation
When a projector is used, the image formed on the screen is real because it can be seen and captured on a surface. The image is inverted because the light rays from the projector cross over each other before reaching the screen. Lastly, the image is magnified because the projector enlarges the size of the image compared to the original object.Rate this question:
-
- 16.
Normal, incident ray and reflective ray lie at a same point in
- A.
Reflection only
- B.
Refraction only
- C.
Reflection and refraction both
- D.
None of them
Correct Answer
C. Reflection and refraction bothExplanation
When an incident ray strikes a surface, it can undergo both reflection and refraction. Reflection occurs when the incident ray bounces off the surface, following the law of reflection which states that the angle of incidence is equal to the angle of reflection. Refraction, on the other hand, happens when the incident ray passes through the surface and changes direction due to the change in medium. Therefore, the normal, incident ray, and reflective ray can all be in the same point during both reflection and refraction.Rate this question:
-
- 17.
Light travels at a speed of (in vacuum)
- A.
3.0 x 107 m s-1
- B.
30 x 108 m s-1
- C.
3.0 x 10-8 m s-1
- D.
3.0 x 108 m s-1
Correct Answer
D. 3.0 x 108 m s-1Explanation
Light travels at a speed of 3.0 x 108 m s-1 in vacuum. This is a well-known scientific fact that has been measured and confirmed through experiments. The speed of light is an important constant in physics and is used in various calculations and theories. It is the maximum speed at which information or energy can travel through space.Rate this question:
-
- 18.
When angle of incidence in denser medium is greater than critical angle, will total internal reflection take place or not?
- A.
It will
- B.
It won't take place
- C.
May take place
- D.
It is a property of total external angle
Correct Answer
A. It willExplanation
When the angle of incidence in a denser medium is greater than the critical angle, total internal reflection will take place. This phenomenon occurs when light travels from a medium with a higher refractive index to a medium with a lower refractive index, and the angle of incidence exceeds the critical angle. In such cases, instead of refracting out of the medium, the light is completely reflected back into the denser medium. This is a property of total internal reflection and is used in various applications such as fiber optics and mirages.Rate this question:
-
- 19.
Angle of incidence in optically denser medium for which angle of refraction in less dense medium is 90° is termed as
- A.
Normal angle
- B.
Covalent angle
- C.
Critical angle
- D.
Internal angle
Correct Answer
C. Critical angleExplanation
The angle of incidence in an optically denser medium for which the angle of refraction in a less dense medium is 90° is known as the critical angle. At this angle, the light ray incident on the boundary between the two mediums will be refracted along the boundary, parallel to it. Any angle of incidence greater than the critical angle will result in total internal reflection, where the light is reflected back into the denser medium instead of being refracted.Rate this question:
-
- 20.
Which one of following is a true statement about reflection?
- A.
Incident ray, reflective ray and normal lies at a different point
- B.
Angle of incidence is not equal to angle of reflection
- C.
Point on which ray touches mirror is called critical point
- D.
Angle of reflection is equal to angle of incidence
Correct Answer
D. Angle of reflection is equal to angle of incidenceExplanation
The statement that the angle of reflection is equal to the angle of incidence is true. According to the law of reflection, when a ray of light reflects off a surface, the angle at which it approaches the surface (angle of incidence) is equal to the angle at which it reflects off the surface (angle of reflection). This law holds true for all types of reflection, including reflection off a mirror.Rate this question:
-
- 21.
The splitting of light into its component colours is called
- A.
Refraction
- B.
Spectrum
- C.
Desperation
- D.
Diffraction
Correct Answer
C. Desperation -
- 22.
A drop of water appears like pearl due to
- A.
Refraction
- B.
None
- C.
Reflection
- D.
Total internal reflection
Correct Answer
D. Total internal reflectionExplanation
When light travels from a denser medium (like water) to a less dense medium (like air), it bends or refracts. This bending of light causes the light rays to change direction and separate into different colors. In the case of a drop of water, when light enters the drop and undergoes multiple reflections inside, it can reach a critical angle where it is completely reflected back inside the drop. This phenomenon is known as total internal reflection. As a result, the drop of water acts like a tiny prism, separating the light into different colors and giving it a pearl-like appearance.Rate this question:
-
- 23.
Power of a lens is 2D, it’s focal length is
- A.
-0.5 m
- B.
50 cm
- C.
150 cm
- D.
50m
Correct Answer
B. 50 cmExplanation
110cm/2=50CMRate this question:
-
- 24.
Lateral displacement is directly proportional to:
- A.
Angle of incidence
- B.
angle of refraction
- C.
Thickness of the slab
- D.
Velocity of light
Correct Answer
C. Thickness of the slabExplanation
Lateral displacement refers to the horizontal shift of a ray of light as it passes through a medium. The thickness of the slab refers to the distance the light ray travels through the medium. The greater the thickness of the slab, the greater the lateral displacement of the light ray. Therefore, lateral displacement is directly proportional to the thickness of the slab.Rate this question:
-
- 25.
A stick in water appears broken due to
- A.
Reflection of light
- B.
Refraction of light
- C.
Total internal reflection
- D.
NONE
Correct Answer
B. Refraction of lightExplanation
When light passes from one medium to another, such as from air to water, it changes its speed and direction. This phenomenon is called refraction. When a stick is partially submerged in water, the light rays coming from the stick bend as they enter the water, causing the stick to appear broken. This is because the light rays that reach our eyes are not coming directly from the stick but are refracted by the water. Therefore, the correct answer is "refraction of light."Rate this question:
-
Quiz Review Timeline +
Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
-
Current Version
-
Mar 19, 2023Quiz Edited by
ProProfs Editorial Team -
Aug 29, 2016Quiz Created by
Harry.hot02
Advanced Electromagnetism and Maxwell's Equations Quiz
Advanced Electromagnetism and Maxwell's Equations Quiz
Magnetohydrodynamics Quiz: Test Your Hydrodynamics Knowledge
Magnetohydrodynamics Quiz: Test Your Hydrodynamics Knowledge
Master Fluid Dynamics: Continuity Equation Quiz for Students
Master Fluid Dynamics: Continuity Equation Quiz for Students
Two-Dimensional Conformal Field Theory Quiz for Beginners
Two-Dimensional Conformal Field Theory Quiz for Beginners
Theoretical Physics Basics: Conformal Field Theory Quiz
Theoretical Physics Basics: Conformal Field Theory Quiz
Quantum Dynamics Test: Variational Perturbation Theory Quiz
Quantum Dynamics Test: Variational Perturbation Theory Quiz
- Aeronautics Quizzes
- Aerospace Quizzes
- Agricultural Science Quizzes
- Astrology Quizzes
- Astronomy Quizzes
- Atom Quizzes
- Biochemistry Quizzes
- Biology Quizzes
- Biomechanics Quizzes
- Biostatistics Quizzes
- Biotechnology Quizzes
- Botany Quizzes
- Branches Of Science Quizzes
- Chemistry Quizzes
- Cytology Quizzes
- Easy Science Quizzes
- Ecology Quizzes
- Electrical Quizzes
- Embryology Quizzes
- Endocrinology Quizzes
- Engineering Quizzes
- Environmental Science Quizzes
- Epidemiology Quizzes
- Experiment Quizzes
- Forestry Quizzes
- Fossil Quizzes
- Gas Quizzes
- General Science Quizzes
- Genetics Quizzes
- Histology Quizzes
- Human Biology Quizzes
- Integrated Science Quizzes
- Invention Quizzes
- Library Science Quizzes
- Lighting Quizzes
- Liquid Quizzes
- Marine Biology Quizzes
- Microbiology Quizzes
- Molecular Biology Quizzes
- Nature Quizzes
- Neuroscience Quizzes
- Nuclear Science Quizzes
- Oceanography Quizzes
- Psychology Quizzes
- Science And Technology Quizzes
- Science Glossary Quizzes
- Science Knowledge Quizzes
- Science Practice Quizzes
- Scientific Method Quizzes
- Scientific Notation Quizzes
- Soil Science Quizzes
- Solar System Quizzes
- Solid Quizzes
- Zoology Quizzes
Back to top