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

If the distance of a surface from light source is doubled,then the luminance will become

Question # 2

The laser light used in an optical fiber system has a wavelength equal to

Question # 3

If a lens is cut into two piece perpendicular to the principal axis and only part is used the intensity of the image:

Question # 4

X-ray crystallography can be used to get what information about the structure of a compound?

Question # 5

A plane wavefront is that which has source

Question # 6

Polaroids are used in

Question # 7

A ______ lens is used in the apparatus to get Newton,s rings

Question # 8

On a diffraction grating which thing acts as a slit

Question # 9

If the wavelength of light used in Michelsion's interferometer is 400 nm and the moveable mirror only moved throughλ/4, then the length moved will be

Question # 10

Soap bubble looks colored due to

Question # 11

Which of the following is conserved when light waves interfere?

Question # 12

In compound microscope the focal length of eye piece is

Question # 13

Multi-mode step index fibre index fibre is used to send

Question # 14

Least distance of distinct vision

Question # 15

An optical instrument used to see very far off objects is called

Question # 16

To wavelength of light by his experiment , Newton utilized:

Question # 17

The phenomenon of diffraction also contains the phenomenon of

Question # 18

Newton's rings are formed as a result of

Question # 19

A polaroid is:

Question # 20

The central ring is bright in case of newton's ring produced by:

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MCAT Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 In compound microscope image formed is
A. Real erect and diminished
B. Virtual inverted magnitude
C. Real inverted and magnified
D. Virtual inverted and magnified
2 In Newton s rings the central spot appears dark due to
A. Phase change
B. Destructive interference
C. Small eye piece of optical device
D. Both a and b
3 One cannot see through fog becuase
A. Fog absorbs light
B. The refractive index of fog is infinity
C. Light suffers total reflection at the droplet in a fog
D. Light is scattered by the droplets in fog
4 The minimum number of lenses used in compound microscope is
A. 1
B. 2
C. 3
D. 4
5 How the fringe spacing varies as the separation of the slits increases
A. Increases
B. Decreases
C. Increases very little
D. None of these
6 A grating with high resolving power can distinguish ______ difference in ______
A. Smaller, amplitude
B. Greater, wavelength
C. Smaller, wavelength
D. Greater, intensity
7 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
8 How many fringes will pass a reference point if the moveable mirror of a Michelson s interferometer is moved 0.06 mm The wavelength of light used is 5.89 x10-3 mm
A. 200
B. 300
C. 20.4
D. 2.3
9 For glass-air boundary, the value of the critical angle is
A. 42°
B. 45°
C. 30°
D. 60°
10 Snell's Law is defined as
A. n1 sin θ2 = n2 sin θ
B. n sin θ1 = n1 sin θ2
C. n1 sin θ1 = n2 sin θ2
D. None of these

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