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

In Michelsion's interferometer, if 'm' number of fringes are passed in front of a reference point when the moveable mirror is moved a distance L, then

Question # 2

The difference between 1st ring fringe and 1st dark fringe is measured as

Question # 3

For glass-air boundary the critical angle θc is

Question # 4

Which of the following is an optically active material

Question # 5

In an astronomical telescope is the objective has the focal length fo is

Question # 6

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

Question # 7

A monochromatic source of light gives light of

Question # 8

As the object is brought from a far off point to he focus, the magnification goes on

Question # 9

The light form Sun reaches earth in the form of

Question # 10

When the object lies between F and 2F the image formed by a convex lens is

Question # 11

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

Question # 12

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

Question # 13

Light waves produce interference when

Question # 14

In spectrometer the function of collimator is to produce

Question # 15

For total internal reflection to take place, the angle of incidence must be ______ than critical angle and the light should travel from ______ to ______ medium

Question # 16

What will be the colour of the sky as seen from the earth if there were no atmosphere ?

Question # 17

The speed of light in a medium depends upon

Question # 18

In YDS experiment, fringe spacing means the distance between two consecutive_____fringes:

Question # 19

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

Question # 20

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

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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 For the sustained interference of light the necessary condition is that the two sources should
A. Have constant phase difference
B. Be narrow
C. Be close to each other
D. Of same amplitude
2 If light of low wavelength is used in Young's double slit experiment then width of the fine will
A. Decreases
B. Increase
C. Not fixed
D. No change
3 YDS experiment can be used to determine:
A. Grating element
B. Fringe spacing
C. Wave length of monochromatic light
D. Frequency of wave light
4 Point out angle/angle at which the sin θ and tan θ have the same value
A. 2o and 8o
B. 4o and 6o
C. 2o and 4o
D. 8o and 10o
5 A spectrometer is used to find
A. Wavelength of light
B. Refractive index of the prism
C. Angle of minimum deviation of prism
D. All of these
6 Star twinkle due to
A. The fact that they do not emit light continously
B. The refractive index of earth's atmosphere fluntuates
C. The star's atmosphere absorbs its light intermittently
D. None of these
7 Proportion of light in an optical fibre requires that the light-should be within the fibre
A. Very little confined
B. Largely confined
C. Totally confined
D. None of these
8 The fine rulings on a compact disc as a diffraction grating but each line is wide like
A. 0.01 μm
B. 0.5 μm
C. 0.05 μm
D. 0.6 μm
9 Fringe spacing in YDS experiment will be maximum if we use:
A. Red light
B. Green light
C. Violet light
D. Blue light
10 In the thin film, the path difference between the two reflecting waves depends upon
A. thickness of film
B. nature of film
C. angle of incidence
D. all of them

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