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

A new type of optical fibre in which central core has high refractive index and its density gradually decreases towards its periphery is called

Question # 2

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

Question # 3

If the moveable mirror in Michelsion's interferometer moves a distanceλ/2, the path difference changes by

Question # 4

For destructive interference the path difference is give by:

Question # 5

Which of the following types of optical fibre has a very thin core of about 5μm diameter and has a relatively large cladding?

Question # 6

Light waves are:

Question # 7

If the vibrations of the light wave are confined to one plane only, then this light is called

Question # 8

In a spectrometer experiment monochromatic light is incident normally on a diffraction grating having 4.5 x 105 lines per meter.The second order line is seen at an angle of 30 to the normal what is the wavelength of the light?

Question # 9

The magnification is negative for

Question # 10

Least distance of distinct vision

Question # 11

On a diffraction grating a large number of close parallel equidistant slits are ruled on it

Question # 12

According to Young s experiment if frequency of light used is halved then fringe width becomes

Question # 13

If the light travels in a straight line, the central region should appear

Question # 14

In which mode, the refractive index steps down form 1.52 to 1.48 at the boundary with the cladding?

Question # 15

The blending of light when it passes from one medium to another is known as:

Question # 16

Television signal are converted into light signals by

Question # 17

A double convex lens act as a diverging lens when the object is

Question # 18

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

Question # 19

Newton's rings are:

Question # 20

In the formulaαamino = 1.22λ/D, D denotes

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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 A driver in a lake wants to signal his distress to a person sitting on the edge of the lake flashing his water proof torch He should direct the beam
A. Vertically up wards
B. Horizontally
C. At angle to the vertical which is slightly less than the critical angle
D. At an angle to the vertical which is slightly more than critical angle
2 In newton's rings see through the reflected light, centeral spo is:
A. Bright
B. Dark
C. Either of the Two
D. None of these
3 Which device converts the light signals which these amplified and decoded
A. Photo cell
B. Photo diode
C. Photo transistor
D. None of these
4 The bending of light when it passes from one medium to another is known as
A. Refraction
B. Interference
C. Polarization
D. Diffraction
5 When monochromatic light is incident, making certain angle, on a thin parallel film, the interference fringes formed are
A. straight
B. circular
C. square
D. plane
6 Monochromatic light directly means waves of
A. Same frequency
B. Same color
C. Same wavelength
D. All of them
7 The resolving power of human eye is
A. 1° 
B. 2°
C. 3°
D. 6°
8 In the Newton's ring, as we proceed towards the periphery of the lens, the thickness of air film
A. gradually decreases
B. gradually increases
C. suddenly becomes zero
D. all of them
9 Which phenomenon of light takes place in Young's double-slit experiment?
A. polarization of light
B. diffraction of light
C. interference of light
D. reflection of light
10 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

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