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

Try The 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

Ray optics is valid,when characteristic dimensions are

Question # 2

A completely transparent material will be invisible in vacuum when the refractive index n is

Question # 3

In the relations d sinθ = nλ, shows that the value of θ depends upon 'n' so the images of different colours are much separated in

Question # 4

The diffraction of light occurs, due to interference, of

Question # 5

Source of light used in the fibre optic communication

Question # 6

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

Question # 7

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

Question # 8

In compound microscope magnification of objective is 2 and magnification of eyepiece is 4 magnification of compound microscope is

Question # 9

If the light travels in a straight line, the central region should appear

Question # 10

Spectrometer can be used to

Question # 11

Phase change of 180° is equivalent to a path difference of

Question # 12

The light which has components in all directions is called

Question # 13

Signal from a remote control to the device operated by it travels with the speed of:

Question # 14

A typical diffraction grating has lines per centimeter is about

Question # 15

When light signal travels along fibres, the power losses are mainly due to

Question # 16

An optical fibre with its protective case may be typically

Question # 17

When light travels from one medium to another which are separated by a sharp boundary the characteristic which does not change is

Question # 18

Which one the following gives three regions of electromagnetic sepctrum in order of increasing wavelength?

Question # 19

The scattering of X-rays from atoms in a crystalline lattice gives rise to

Question # 20

The cause of power loss in optic fibre is

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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 The conversion of electrical signals into light signals taken place due to
A. Generator
B. Transmitter
C. Receiver
D. None of these
2 The speed of light in a medium of refractive index 1.5 is
A. 3 x 108ms-1
B. 4.5 x 108ms-1
C. 2.0 x 108ms-1
D. None of these
3 One cannot see through fog because
A. Fog absorbs light
B. The refractive index of fog is infinity
C. Light suffers total reflection at the droplet in a fog
D. Light is scattered by the droplets in fog
4 If the two reflected waves reinforce each other then the firm as seen from the parallel beam of monochromic light will look
A. Dark
B. Bright
C. Sometimes bright and dark
D. None of these
5 Whenever high magnification is desired
A. A telescope is used
B. A compound microscope is used
C. A microscope is used
D. None of these
6 At what distance should a book be placed from a 50 Cd bulb so that the luminance on the book becomes 2 Im m-2
A. 50 m
B. 10 m
C. 5 m
D. 1 m
7 A line which represents the direction of travel of a wave is known as:
A. Spherical wavefront
B. Locus
C. Ray
D. Either B or C
8 The property of light which makes light possible to be transmitted into inaccessible place is
A. Interference
B. Diffraction
C. Polarization
D. None of these
9 Critical angle of light passing from glass to air is minimum for
A. Red
B. Green
C. Yellow
D. Violet
10 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

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