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

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

Question # 2

For a point source of light the wave front produced are

Question # 3

Conditions for interference are that the two sources should be coherent and:

Question # 4

The information received at the other end of a fibre can be inaccurate due to

Question # 5

When the light from two lamps falls on a screen, no interference pattern can be obtained. Why is this?

Question # 6

While viewing a distant object with a telescope suddenly a housefly sits on objective lens.The correct statement is that

Question # 7

Which of the following frequency ranges includes most of the electromagnetic waves emitted by the ultra - violet tubes used in a sun bed?

Question # 8

The light signals are sent from the source

Question # 9

Colour of thin film will not show result from

Question # 10

A diffraction grating contains 5000 lines per centimeter, its grating element will be

Question # 11

A convex lens is dipped in a liquid whose refractive index is equal to the material of the lens. Then its focal length will become

Question # 12

In photo phone modulated beam of reflected sun light focused on a detector several hundred meters away with the divice

Question # 13

The distance between the centres of two consecutive bright fringes (or dark fringes) is called

Question # 14

Michelesion's interferometer is an instrument usually used to measure

Question # 15

The phenomenon of diffraction can be exhibited by

Question # 16

The normal human eye can focus a sharp image of an object located anywhere form infinity to a certain point called

Question # 17

Polaroid glass is used in sun glasses because

Question # 18

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 # 19

Inverse square law for luminace is valid for

Question # 20

When the light waves of the same frequency and amplitude travelling in the same direction superimose each other , they give rise to

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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 maximum size of an object as seen by the naked eye is obtained when it is placed of
A. Far point
B. Near point
C. Distant point None of these
2 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
3 At certain speed, the time taken by light in moving from M to m and back to M is equal to the time taken by
A. Face 4  to 1
B. Fact 6 to 1
C. Face 3 to 1
D. Face 2 to 1
4 When a mirror of a Michelsion's interferometor is moved a distance of 0.5 mm, 2000 fringes are observed, the wavelength of the light used is
A. 5000 mm
B. 5000°A
C. 500 cm
D. 2000°A
5 A convex lens of focal length 5 cm is used as magnifying glass Its magnifying power when the image is formed at infinity
A. 6
B. 5
C. 1.5
D. 7
6 If the bright fringe into be observed then we have relation
A. Y = mLd/λ
B. Y = mλL/d
C. Y = λd/mL
D. Y = λL/md
7 Refractive index of material depends upon
A. Nature of material
B. Wave length
C. Temperature
D. All of these
8 The medium in which speed of light is the same in all directions is called
A. non-homogeneous medium
B. homogeneous medium
C. both of them
D. empty medium
9 A double convex lens acts as a diverging lens when the object is
A. Between f and 2f
B. At the foucs
C. Inside the focus
D. All of these
10 For interference to occur the two light waves should be:
A. Of two different frequencies
B. Coming from opposite directions
C. Of high intensity
D. Monochromatic

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