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

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

Question # 2

The distance between two concentric wave fronts is

Question # 3

The minimum distance between an object and its image in a convex lens is

Question # 4

In Bragg's formula, the path difference should beam integral multiple of the wavelengths

Question # 5

If 5000 lines per cm are ruled on different on a diffraction grating then the slit spacing will be

Question # 6

According to Young s experiment the distance between two adjacent bright fringes of blue light is _____ than for oranges light

Question # 7

Light signals in an optical fibre eventually become dim and must be regenerated by devices called

Question # 8

Angle subtended by any side of the eight-sided mirror at the center is

Question # 9

Which type of optical fiber has the largest diameter

Question # 10

The light source used in multimode step index fibre is

Question # 11

Newton's rings are formed due to

Question # 12

Intensities of the two waves of light are I and 4I.The maximum intensity of the resultant wave after superposition is

Question # 13

Light of wavelength 800 n m is incident on a pair of slits, forming fringes 4.0 mm apart on a screen. What is the fringe when light of 400 nm is used and the slit separation is halved?

Question # 14

How is the image formed by a convex lens affected if the upper half of the lens is covered with a paper

Question # 15

The wave nature of light was proposed by:

Question # 16

We can divide the optical fibres on the basis of the mode by which they propagate light in

Question # 17

A prism splits a beam of white light into its seven constituent colors.This is so because

Question # 18

In Michelson interferometer if the moveable mirror is moved through a distance of 8λ then the number of fringes shifted are

Question # 19

A _____ lens is used in the apparatus to get newton's ring:

Question # 20

The cause of power loss in optic fibre is

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MCAT Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 Which of the following types of optical fibre has a core which rages in diameter from 50 to 1000μm?
A. single mode step fibre
B. multi-mode step index fibre
C. multi-mode graded index fibre
D. none of them
2 Photo phone was invented by
A. Edison
B. Graham Bell
C. Bardeen
D. None of these
3 If 5000 lines/cm are ruled on a diffraction grating, the element is:
A. 5 x 10-5m
B. 2 x 10-6m
C. 5 x 10-6m
D. 2 x 10-5m
4 The disadvantage of the step-index fibre can be reduced by
A. graded index fibre
B. non-graded index fibre
C. both of these
D. none of these
5 According to the Huygen's principle, the secondary wavelets propagate in the forward direction with a speed equal to
A. speed of wave motion
B. speed of medium
C. speed of electrons
D. speed of protons
6 Optic fibers are related with
A. Communication
B. Light
C. Computer
D. None of these
7 The optical resolution of microscope or a telescope tells us how close together, the two point sources of light can be so that they are still seen as two separate sources
A. Angular magnification
B. Resolution
C. Magnification
D. None of these
8 A double convex lens act as a diverging lens when the object is
A. Inside the focus
B. Between f and 2f
C. At the focus
D. At a large distance
9 To observe the phenomenon of interference of light, the light should be
A. Monochromatic
B. Phase coherence
C. Coherent sources
D. All of these
10 Speed of light in vacuum is
A. 0 ms-1
B. 3 x 108ms-1
C. 1.5 x 108ms-1
D. None of these

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