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

Which of the following is the most common method to obtain polarized light?

Question # 2

Michelsion devised the Michelson's interferometer in

Question # 3

We can achieve polarization by

Question # 4

Multi-mode step index fibre index fibre is used to send

Question # 5

A mode of propagation of light through optical fibre in which the light within the fibre is

Question # 6

Ordinary light has components of vibration in

Question # 7

In Newton s rings the central spot appears dark due to

Question # 8

In Multimode step index fibre the refractive index from its centre to the boundary is

Question # 9

In YDS experiment, data given isλ=500 nm, d=1 mm, L=100cm,∆y come out to be:

Question # 10

The path difference involved in interference in thin films depends upon

Question # 11

Who confirm the wave theory of light ?

Question # 12

Which phenomenon of light takes place in Young's double-slit experiment?

Question # 13

The path difference and phase difference are related to each other as

Question # 14

The light source used in multimode step index fibre is

Question # 15

Light of wavelength 800 n m is incident on a pair of slits, forming fringes 4.0 mm apart on a screen. What is the fringe when light of 400 nm is used and the slit separation is halved?

Question # 16

Plane microwaves are incident on a long slit having a width of 5 cm.The wavelength of the microwaves if the first minima is formed at 30° is

Question # 17

The angle of incidence at which angle of refraction becomes 900 is called

Question # 18

The light signal in an optical fibre is totally confined due to the

Question # 19

The medium in which speed of light is the same in all directions is called:

Question # 20

When monochromatic light is incident, making certain angle, on a thin parallel film, the interference fringes formed are

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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 According to WH Bragg and WL Bragg monochromatic beam of X-rays was reflected form a crystal plane is like a
A. Smooth and regular
B. Mirror
C. Thin film
D. None of these
2 In case of interference fringes:
A. Energy is destroyed at dark
B. Energy is created at bright fringes
C. Energy is transferred from dark to bright ringes
D. None of these
3 If a source of light is moving away from stationary observer then frequency of light wave appears to change because of
A. Doppler's effect
B. Interference
C. Diffraction
D. None of the above
4 Two layers optical fibre in which central layer is called core which has refractive index
A. High
B. Low
C. Very low
D. None of these
5 The wavelength of light is 6000°A, the number of waves continued in 0.01 m distance will be
A. 1.6 x 104
B. 3 x 103
C. 2 x 106
D. 4 x 108
6
Question Image
7 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
8 When light signal travels along fibres, the power losses are mainly due to
A. scattering
B. absorption
C. both of them
D. either of them
9 When the length of a microscope tube increases its magnifying power
A. Decreases
B. Increases
C. Does not change
D. May increase or decrease depending on the observer and the place of observation
10 A thin film is a transparent medium whose thickness is comparable with the wavelength of
A. light
B. sound
C. any one of them
D. none of them

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