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

  • Total Questions20

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MDCAT Physics Chapter 7 Light Online Test

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Question # 1

For destructive interference the path difference is give by:

Question # 2

The ability of an instrument of reveal the minor details of an object under examination is called

Question # 3

When an image is placed at the focal length of the eye piece, the final image formed at

Question # 4

Critical angle of light passing from glass to air is minimum for

Question # 5

The function of colimator is

Question # 6

A spherical wavefront is that which has

Question # 7

If a point source of light is placed at the focus of a convex lens the rays coming out of the lens will constitute

Question # 8

To wavelength of light by his experiment , Newton utilized:

Question # 9

In Michelson's interferometer , the plates are placed in front of incident ray at an angle of:

Question # 10

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

Question # 11

When 'θ' is small then

Question # 12

Why laser rays are used to measure long distance?

Question # 13

The direction of a ray of light is.......to the wave front.

Question # 14

The ultra-purity of optical fibre is

Question # 15

The image of the tip of a needle is never sharp because of

Question # 16

A simple telescope is consists of

Question # 17

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

Question # 18

For single slit diffraction the first minimum occurs when

Question # 19

Which phenomenon of light conclusively prove that light waves are transverse waves

Question # 20

If tube length of astronomical telescope is 105 cm and magnifying power is 20 for normal setting calculate the focal length of objective

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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 When the light from two lamps falls on a screen, no interference pattern can be obtained. Why is this?
A. the light from the lamps is white
B. the lamps emit light of different amlitudes
C. the light from the lamps is not coherent
D. the lamps are not point sources
2 The function of compensator plate in interferometer is to
A. Interfere properly
B. To equalize the distance of M1 and M2
C. Reflecting light properly
D. None of these
3 If the focal of a convex lens is 5 cm then to get real and inverted image of the same size as that of object, the object should be placed at
A. 5 cm
B. 10 cm
C. 15 cm
D. 20 cm
4 Inspite of different dispersion, all the wavelengths arrive at the other end of the fibre at the same time. With a step-index fibre overall time difference may be about
A. 40 ns
B. 30 ns
C. 32 ns
D. 33 ns
5 Michelson's interferometer is an instrument that is capable of measuring distance with
A. low precision
B. high precision
C. extremely high precision
D. extremely low precision
6 An image formed by a concave lens is always
A. Virtual
B. Real
C. Inverted
D. None of these
7 How is the image formed by a convex lens affected if the upper half of the lens is covered with a paper
A. The upper half of the image is cut off
B. The brightness of the image is reduce
C. The brightness of the image is increased
D. Lower half of the image is cut off
8 If the light travels in a straight line, the central region should appear
A. Bright
B. Dark
C. No effect
D. None of these
9 Why laser rays are used to measure long distance?
A. Laser rays propagate in a straight
B. Laser rays are not absorbed
C. Laser rays are most coherent waves
D. Laser rays are high velocity waves
10 Using a graded index fibres the time difference is reduced to about
A. 0.5 ns per km
B. 1.0 ns per km
C. 2.0 ns per km
D. 2.3 ns per km

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