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

An optical fibre with its protective case may be typically 6.0 mm in diameter and yet it can replace bundle of copper of diameter

Question # 2

For total internal reflection to take place, the angle of incidence must be ______ than critical angle and the light should travel from ______ to ______ medium

Question # 3

A beam of light enters air from water.Which of the following characteristics of light will not change in water?

Question # 4

The most common method to obtain plane polarized light by using dichoric substance is:

Question # 5

Which one light source can travel faster through optical fibre is

Question # 6

Which part of the spectrum is most visible?

Question # 7

Conventionally, all the distances p, q, f, are measured from ______ of the lens

Question # 8

In Young's double slit experiment, the widths of dark and bright fringes are

Question # 9

Wave length of red colour as compared to that of violet colour is:

Question # 10

The distance between the centres of two consecutive bright fringes (or dark fringes) is called

Question # 11

For a monochromatic light passing from air to glass, which one of the following statement is true?

Question # 12

The speed of light in vacuum or in air is

Question # 13

The idea of light as wave produced by

Question # 14

Just before  setting the sun may appear to be elliptical This happens due to

Question # 15

Two lenses of power +12 and -2 diopters are placed in contact the power of combination is

Question # 16

Ray optics is valid,when characteristic dimensions are

Question # 17

The fringe spacing varies directly with

Question # 18

The different parts of spectrometer

Question # 19

YDS experiment can be used to determine:

Question # 20

In multimode graded index fibre core and cladding has boundary

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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 Mirage is a phenomenon due to
A. Reflection of light
B. Refraction of light
C. Total internal reflection of light
D. Diffraction of light
2 If λ = 589 nm   d=1.0 mm  L=225 cm then fringe spacing ΔY is given by  
A. 1.76 mm
B. 1.80 mm
C. 1.37 mm
D. 1.33 mm
3 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
4 When the light waves of the same frequency and amplitude travelling in the same direction superimose each other , they give rise to
A. interference
B. diffraction
C. dispersion
D. polarization
5 For constructive interference the path difference is
A. mλ
B. (m-1)λ
C. m2λ
D. 1/2mλ
6 In YDS experiment, if the distance between the slits and also the distance between slits and screen is doubled, the fringe width
A. Becomes doubled
B. Becomes 4 times
C. Is halved
D. Remains the same
7 The wavelength of refractive wave in a denser medium is
A. Same as that of the incident wave
B. Become smaller than the incident
C. Becomes greater than the incident wave
D. None of these
8 The unpolarized light is
A. An ordinary incandescent bulb
B. Sun
C. Moon
D. All of these
9 Which light travels faster in optical fibres?
A. visible light
B. ultraviolet
C. infra-red
D. any one of them
10 Which type of optical fiber has the largest diameter
A. Single mode step index fiber
B. Multi-mode step index fiber
C. Multi-mode graded index fiber
D. None of these

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