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 converts electrical signals into light signals?

Question # 2

Using monochromatic light, interference fringes are produced on a screen placed a distance D from a pair of slits of separation a.
The separation of the fringes is X.
a is now halved and D is increased by a factor of 4.
What is the new fringe separation?

Question # 3

The phenomenon of polarization proves that the light waves are

Question # 4

The speed of light in vacuum or in air is

Question # 5

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

Question # 6

If the bright fringe into be observed then we have relation

Question # 7

Power of a lens is equal to

Question # 8

Which of the following properties show light is transverse wave in nature?

Question # 9

An image formed by a concave lens is always

Question # 10

When sunlight falls on a soap bubble (film), it appears coloured because of

Question # 11

Two sources of waves are called coherent if

Question # 12

Electromagnetic waves transport:

Question # 13

Diffraction of X-ray by crystals show that

Question # 14

In Michelsion's interferometer, if a dark fringe is seen in the beginning, the next dark fringe will appear by moving the moveable mirror through a distance

Question # 15

In multi-mode step index optical fibre, that layer is called cladding which has

Question # 16

If the moveable mirror in Michelsion's interferometer moves a distanceλ/2, the path difference changes by

Question # 17

Given that grating element = 0.2 x 10-3cm in case of a diffraction grating. Then number of lines per centimeter will be

Question # 18

In Michelsons interference the movable mirror is moved and a shift of two fringes is observed then the distance moved by the mirror is

Question # 19

Light has:

Question # 20

The minimum distance between a source and the screen for which a real image is possible with a convex lens 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 distance between different interference fringes are:
A. Variable
B. Same
C. Different
D. None of these
2 Which one of the following phenomena is not explained by Huygen's construction of wavefront?
A. Refraction
B. Reflection
C. Diffraction
D. Origin of spectra
3 Which of the following radiation will be focused farthest from a convex lens
A. X - rays
B. γ - rays
C. Microwaves
D. β - rays
4 Sun has elliptical shape when it rises and sets due to
A. Refraction
B. Reflection
C. Scattering
D. Dispersion
5 The wavelength of refractive wave in a denser medium is
A. Same as that of the incident wave
B. Become smaller than the incident
C. Becomes greater than the incident wave
D. None of these
6 The speed of light in vacuum or in air is
A. 3 x 1010 m ! s
B. 3 x 109 m ! s
C. 3 x 108 m ! s
D. 3 x 107 m ! s
7 In cause of YDS experiment, the distance between adjacent bright fringes is given by
A. Δy =λL/d
B. ΔY = L/λd
C. ΔY =λ/L
D. None of these
8 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
9 In an astronomical telescope is the objective has the focal length fo is
A. Small
B. Very small
C. Long
D. None of these
10 The study of atomic structures of crystals by X-rays was started in
A. 1890
B. 1905
C. 1914
D. 1944

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