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

Repeaters are the devices which regenerate the signals and are placed at about

Question # 2

Successive dark and bright fringes are formed each time the moveable mirror in Michelsion's interferometer is moved a distance

Question # 3

The fringe spacing varies directly with

Question # 4

The spacing between lines of diffraction grating is

Question # 5

In digital modulation, the LED or laser flashed on and off at a

Question # 6

In the Newton's ring, as we proceed towards the periphery of the lens, the thickness of air film

Question # 7

The velocity of light in vacuum can be changed by changing:

Question # 8

The diffraction grating is used to determine

Question # 9

A point source in a homogeneous medium gives rise to:

Question # 10

Identify the incorrect statement

Question # 11

The distance between the objective and eye-piece of a telescope in normal adjustment is

Question # 12

A line normal to the wave front is called

Question # 13

The power loss can also take place due to

Question # 14

The property of light which does not change with the nature of the medium is:

Question # 15

Diffraction of light occurs, due to the interference between rays coming from the same wavefront of

Question # 16

Michelesion's interferometer is an instrument usually used to measure

Question # 17

An oil film floating on water surface show colours due to

Question # 18

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

Question # 19

Huygen's theory cannot explain:

Question # 20

When a ray of light goes from a denser medium into a rare medium

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MCAT Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 In Young's double slit experiment, the fringe width depends on
A. wavelength of the light used
B. distance between the slits and screen
C. distance between the slits
D. all of them
2 In diffraction grating has feature/features like
A. A glass plate
B. A large numbers of lines are ruled
C. Spacing between two lines acts as a slit
D. All of these
3 In a astronomical telescope the final image for normal vision is formed at
A. The focal of the eye piece
B. The least distance of the distinct vision
C. The focus of the objective lens
D. Infinity
4 In Bragg's Equation 2d sin θ = nλ, where 'n' is
A. Order of spectrum
B. Number of reflections
C. Order of reflection
D. None of these
5 Which of the following types of optical fibre has a very thin core of about 5μm diameter and has a relatively large cladding?
A. single mode step index fibre
B. multi-mode step index fibre
C. multi-mode graded index fibre
D. none of them
6 If a glass slab is placed in the path of a converging beam of light The point of convergence of light
A. Moves away from the glass slab
B. Moves towards the glass slab
C. Remains at the same point
D. Moves straight
7 An object is placed between two parallel mirrors the number of images formed is
A. 2
B. 4
C. 8
D. Infinite
8 The diffraction grating is used to measure
A. wavelength of light
B. focal length of a lens
C. refractive index of prism
D. polarization of light
9 What is the time taken by light to travel 4 mm in a material of refractive index 3
A. 4 x 10-11 s
B. 2 x 10-11 s
C. 16 x 10-11 s
D. 8 x 10-11 s
10 If the two reflected waves reinforce each other then the firm as seen from the parallel beam of monochromic light will look
A. Dark
B. Bright
C. Sometimes bright and dark
D. None of these

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