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

Try The MCQ's Test For MDCAT Physics Chapter 7 Light Online Test

  • Total Questions20

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MDCAT Physics Chapter 7 Light Online Test

00:00
Question # 1

Light has:

Question # 2

The tip of a needle does not give a sharp image it is due to

Question # 3

The velocity of light in vacuum can be changed by changing

Question # 4

According to Huygen,every point on a wavefront may be regarded as a.........of secondary wavelets.

Question # 5

The central point in the Newton's rings is dark due to

Question # 6

The components of a fibre optic communication system is/are

Question # 7

Near and far points of a healthy human eye respectively are

Question # 8

Frequency of red colour as compared to that of violet colour is:

Question # 9

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 # 10

Which of the following cannot be polarized?

Question # 11

A planet is observed by an astronomical refracting telescope having an objective of focal length 16 m and an eyepiece of focal length 2 cm.

Question # 12

How the fringe spacing varies as the separation of the slits increases

Question # 13

An optical fiber of ______ cm in diameter id equivalent to 7.62 cm diameter bundle of ______ wires to carry the same amount of signals

Question # 14

Fraunhofer spectrum is a

Question # 15

In YDS experiment, condition for constructive interference is that path difference is equal to

Question # 16

In Newton's rings the thickness of air film at the point of contact is

Question # 17

Speed of light in vacuum is

Question # 18

Characteristics of optic fibre is/are

Question # 19

Which of the following radiation will be focused farthest from a convex lens

Question # 20

The reflected light is

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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 In the study of interference and diffraction, we consider
A. plane waves
B. plane wavefronts
C. both of them
D. none of them
2 In an optical fibre the speed of light is
A. Directly proportional to its refractive
B. Inversely proportional to its refractive inedex
C. Independent of refractive index
D. Directly proportional to square of refractive index
3 The magnification of a compound microscope of object and eye piece of focal lengths f0and fe, respectively is
4 Ray optics is valid,when characteristic dimensions are
A. Of the same order as the wavelength of light
B. Much smaller than the wavelength of length
C. Of the order of one millimeter
D. Much larger than the wavelength or light
5 In Huygen's wave theory the locus of all points in the same state of vibration is called
A. A half-period zone
B. Vibrator
C. Wave front
D. A ray
6 A diffraction grating contains 5000 lines per centimeter, its grating element will be
A. 1 x 10-4nm
B. 1 x 10-14m
C. 1 x 10-14cm
D. 1 x 10-4cm
7 Wavelength of a laser beam can be used as a standard of
A. Time
B. Angle
C. Length
D. Temperature
8 In case of YDS experiment, the distance of the mth bright fringe on the screen from center is
A. Y = (m + 1)λL/d
B. Y = mλL/d
C. Y = (m + 1/2)λL/d
D. None of these
9 In which situation does diffraction occur?
A. a wave bounces back from a surface
B. a wave meets another wave to produce a new wave
C. a wave passes from one medium into another
D. a wave passes through an aperture
10 Which part of the spectrum is most visible?
A. Red
B. Violet
C. Yellow
D. Yellow-green

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