MDCAT Physics Chapter 7 MCQ Test With Answer for (Light )

Many students feel anxious about how to prepare for the exam during the MDCAT preparation effectively. Solving MCQs is considered one of the best ways to analyze your preparation level before the commencement of the test. The students preparing for the MDCAT are informed that they can get the MCQs of chapter 7 of physics from this platform.

MCQ's Test For MDCAT Physics Chapter 7 Light Online Test

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MDCAT Physics Chapter 7 Light Online Test

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Question # 1

The twinkling of stars is due to

Question # 2

One cannot see through fog because

Question # 3

A line which represents the direction of travel of a wave is known as

Question # 4

When the source of light is at very large distance, the shape of wavefront is:

Question # 5

The light signal in graded index fibre is totally confined due to

Question # 6

In the thin film, the path difference of two reflected ray depends upon

Question # 7

If we know the refractive index of glass, speed v of light in the glass can be found by

Question # 8

If the focal of a convex lens is 5 cm then to get real and inverted image of the same size as that of object, the object should be placed at

Question # 9

To observe the phenomenon of interference of light, the light should be

Question # 10

A point source in a homogeneous medium gives rise to:

Question # 11

Which of the following atoms cannot be detected by X-ray crystallography?

Question # 12

In photo phone modulated beam of reflected sun light focused on a detector several hundred meters away with the divice

Question # 13

Michelesion's interferometer is an instrument usually used to measure

Question # 14

The index of refraction of diamond is 2.0 velocity of light in diamond in m/s is

Question # 15

In Michelsion's interferometer, if a dark fringe is seen in the beginning, the next dark fringe will appear by moving the moveable mirror through a distance

Question # 16

If the vibrations of the light wave are confined to one plane only, then this light is called

Question # 17

When an image is placed at the focal length of the eye piece, the final image formed at

Question # 18

The idea of Michelsion's interferometer is based on the

Question # 19

A thin layer of oil on the surface of water looks colored due to:

Question # 20

Let a ray of light enters from air into two media of different refractive indices. The speed of light will be ______ to refractive index

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The answers are also available here to facilitate the students' preparation. With continuous practice, the candidates will be able to get a good score on the entry test. So after preparing for the particular chapter, solve the MCQs and learn about your preparation. Spend maximum time to improve your weak areas and then ace the test with a good score. The students can also solve the other physics chapters' MCQs for better preparation.

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Sr.# Question Answer
1 If tube length of astronomical telescope is 105 cm and magnifying power is 20 for normal setting calculate the focal length of objective
A. 100 cm
B. 10 cm
C. 20 cm
D. 25 cm
2 The relation d sinθ = nλ, where 'n' is the
A. Number of bright fringes
B. Number of dark fringes
C. Order of the spectrum
D. None of these
3 When two light waves travelling in the same direction are out of phase at any point, their resultant amplitude
A. increases
B. decreases
C. remains unchanged
D. increases rapidly
4 Wavelength of light, on the average, is given by:
A. 10-14m
B. 10-10m
C. 10-6m
D. 10-4m
5 In Young s double slit experiment if we use white light then
A. Colored fringes will be observed
B. Bright fringes will be observed
C. Alternate dark and bright fringes will be observed
D. No interference fringes will be seen
6 Speed of light in vacuum depends upon:
A. Frequency
B. Wavelength
C. Amplitude
D. None of above
7 A circular scale is attached and graduated in
A. One degree
B. 2 degrees
C. Half degree
D. None of these
8 Colour of thin film will not show result from
A. Scattering of light
B. Dispersion of light
C. Interference of light
D. Both a and b
9 Two monochromatic radiations X and Y are incident normally on a diffraction grating.The second order intensity maximum for X coincides with the third order intensity maximum for Y what is the ratio wavelength of X/wavelength of Y?
A. 1/2
B. 2/3
C. 3/2
D. 2/1
10 The superposition of the two waves of same frequency and amplitude travelling in the same direction gives rise to an effect called:
A. Diffraction
B. Interference
C. Polarization
D. Dispersion

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