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

If N is the number of rulings on the grating, then the resolving power in the mth order diffraction equals to

Question # 2

Graham Bell photo phone used a modulated beam of

Question # 3

The setting of Newton's rings is

Question # 4

A ray of light always points

Question # 5

The ultra-purity of optical fibre is

Question # 6

The light source used in multimode step index fibre is

Question # 7

The fringe spacing in case of red light

Question # 8

A sun rise or sun set the sun looks reddish because

Question # 9

Which characteristics of wave, established the Huygen's wave theory in 1801?

Question # 10

A ray of light passing from a rarer to a denser medium

Question # 11

When a mirror of a Michelsion's interferometor is moved a distance of 0.5 mm, 2000 fringes are observed, the wavelength of the light used is

Question # 12

The twinkling of stars is due to

Question # 13

If the red light is replaced by blue light illuminating the object in a microscope the resolving power of the microscope

Question # 14

A double convex lens act as a diverging lens when the object is

Question # 15

Newton's rings are:

Question # 16

The regular array of atoms in a crystal forms a natural diffraction grating of spacing typically

Question # 17

The bottom of a container filled with liquid appear slightly raised because of

Question # 18

Which of the following is conserved when light waves interfere

Question # 19

The bending of light when it passes from one medium to another is known as

Question # 20

If a source of light is moving away from stationary observer then frequency of light wave appears to change because of

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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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MCAT Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 Experimental demonstration of wave nature of light was given in 1801 by:
A. Newton
B. Maxwell
C. Thomas young
D. Compton
2 Inspite of different dispersion, all the wavelengths arrive at the other end of the fibre at the same time. With a step-index fibre overall time difference may be about
A. 40 ns
B. 30 ns
C. 32 ns
D. 33 ns
3 Near and far points of a healthy human eye respectively are
A. 0 and 25 cm
B. 0 and infinity
C. 25 cm and 100 cm
D. 25 cm and infinity
4 Colours seen on oily water surface by the incident white light is due to
A. Diffraction
B. Interference
C. Refraction
D. Reflection
5 Multimode step index fibre has a core of relatively larger diameter such is
A. 125 μm
B. 175 μm
C. 50 μm
D. 100 μm
6 A line which represents the direction of travel of a wave is known as
A. Wave front
B. Locus
C. Ray of light
D. Either b and c
7 What is the time taken by light to travel 4 mm in a material of refractive index 3
A. 4 x 10-11 s
B. 2 x 10-11 s
C. 16 x 10-11 s
D. 8 x 10-11 s
8 The wave length of x-rays is of the order of
A. 10-17 m
B. 10-4 cm
C. 10-9 m
D. 10-10 m
9 The disadvantage of the step-index fibre can be reduced by
A. graded index fibre
B. non-graded index fibre
C. both of these
D. none of these
10 The spacing between the parallel lines are served as
A. slits
B. source of light
C. opaque lines
D. fringes

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