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 phenomenon of polarization proves that the light waves are

Question # 2

In the formulaαamino = 1.22λ/D, D denotes

Question # 3

Light appears to travel in straight line because

Question # 4

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

Question # 5

One angstrom equal:

Question # 6

Which one of the following is an optically active substance?

Question # 7

An optical instrument used to see very far off objects is called

Question # 8

For interference to occur the two light waves should be:

Question # 9

The study of atomic structure of crystals by X-rays was initiated by W.H.. Bragg and W.L. Bragg in

Question # 10

A compound microscope is consists of

Question # 11

The typical wavelength of light source in transmitter is

Question # 12

The wave nature of light was proposed by:

Question # 13

An oil surface floating on water surface exhibits beautiful colour patter, which is due to 

Question # 14

The regular array of atoms in a crystal has spacing of the order of

Question # 15

A prism splits a beam of white light into seven component colors. This is so because

Question # 16

The bright fringes are termed as

Question # 17

Which of the following theories of light are explained by the Young's double slit experiment?

Question # 18

The magnifying power of a compound microscope can be increased if we use objective lens of

Question # 19

Diffraction of X-ray by crystals show that

Question # 20

The wave nature of light was first proposed by

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MCAT Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 The resolving power of a grating spectrometer is
2 Light appears to travels in straight lines since
A. It is not absorbed by the atmosphere
B. It is reflected by the atmosphere
C. Its wavelength is very small
D. Its velocity is very large
3 Which of the following is the most common method to obtain polarized light?
A. selective absorption
B. reflection from different surfaces
C. refraction through crystals
D. scattering by small particles
4 In order to get interference using two light rays:
A. The sources should be monochromatic and coherent
B. The sources should have the same frequency
C. Superposition should be linear
D. All of these
5 The relation between displacement of the mirror 'L' and wavelength λ of the light used
A. L = 2mλ
B. L = λ/2m
C. L = mλ/2
D. None of these
6 A fiber of 50μm diameter capable of carrying white light at ______ distances is called ______ index fiber
A. Large, multi-mode step
B. Small, multi-mode step
C. Small, multi-mode graded
D. Large, single mode step
7 The dichronic substances are used in the process getting plane polarized light
A. Selective absorption
B. Refraction through crystals
C. Reflection from different surfaces
D. None of these
8 Optically active substance are those substance which
A. Produce polarization of polarized light
B. Rotate the plane of polarization of polarized light
C. Produce double refraction
D. Both a and b
9 Speed of light in vacuum is
A. 0 ms-1
B. 3 x 108ms-1
C. 1.5 x 108ms-1
D. None of these
10 For destructive interference the path difference is give by:
A. (m-1/2)λ
B. (m+1/2)λ
C. mλ
D. 1/2 mλ

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