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

A plane wavefront is that which has source

Question # 2

In Newton,s rings apparatus, we also use

Question # 3

The path difference and phase difference are related to each other as

Question # 4

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

Question # 5

The waves propagate in space by the motion of the

Question # 6

Optical fibres are of

Question # 7

A fiber of 50μm diameter capable of carrying white light at ______ distances is called ______ index fiber

Question # 8

Who proposed that light energy form a luminous source travels in space by means of wave motion?

Question # 9

In spectrometer the function of collimator is to produce

Question # 10

Multimode step index fibre has a core of relatively larger diameter such is

Question # 11

If Young s double slit experiment is immersed in water then the fringes with

Question # 12

When two lights waves travelling in the same direction are in phase at any point, they producing

Question # 13

The frequency of light ray is 6 x 1014 Hz. The frequency when it propagates in a medium of refractive index 1.5 will be

Question # 14

The light form Sun reaches earth in the form of

Question # 15

Michelsion devised the Michelson's interferometer in

Question # 16

A usual way to obtain a plane wave is to place point source of light at the focus of a

Question # 17

Experimental demonstration of wave nature of light was given in 1801 by:

Question # 18

Who devise the experimental arrangement in 1801 for studying interference effects of light

Question # 19

The digital modulation is expressed in

Question # 20

Magnification of a convex lens is

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MCAT Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 We can use Fibre optics system for
A. Image transmitting
B. Word processing
C. Image processing and recelving
D. All
2 In Michelsion's interferometer the path difference is varied by moving
A. compensatory plate
B. moveable mirror
C. fixed mirror
D. telescope
3 If plane polarized light is incident on the second sheet of Polaroid, the light emitted is full light when their axes are
A. Parallel to each other
B. Perpendicular to each other
C. In between two positions
D. None of these
4 In Young s double slit experiment the separation between the slits in halved and the distance between the slits and the screen is doubled the fringe with will
A. Be doubled
B. Be quadrupled
C. Remain the same
D. Be halved
5 Due to Plano convex lens and the plane glass plate the thickness of air film changes from the center to outward
A. Increasing gradually
B. Decreasing gradually
C. It is constant at the centre
D. None of these
6 Who proposed that light energy form a luminous source travels in space by means of wave motion?
A. Newton
B. Maxwell
C. Einstein
D. Huygen
7 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
8 A wider objective and the use of blue light of short wavelength produces
A. Interference
B. Diffraction
C. Less diffraction
D. Polarization
9 The central point in the Newton's rings is dark due to
A. Destructive interference
B. Constructive interference
C. Additional of path difference λ/2
D. b and c
10 A point source in a homogeneous medium gives rise to:
A. A plane wavefront
B. A spherical wavefront
C. A cylindrical wavefront
D. An elliptical wavefront

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