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

The danger signals are red while the eye is more sensitive to yellow because

Question # 2

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

Question # 3

According to Huygen's principle:

Question # 4

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

Question # 5

Which of the following is not an application of polarization

Question # 6

Spherical aberration can be reduced by using

Question # 7

How many major components of fibre optic communication system are

Question # 8

Light traveling through vacuum enters water which characteristic of light does not charge

Question # 9

Optical fibres function on the principle of

Question # 10

If N is the number of rulings on the grating, then the resolving power in the mth order diffraction equals to

Question # 11

The transmission of information by light waves may be

Question # 12

Which of the following is conserved when light waves interfere?

Question # 13

Confining the light vibrations in one plane is called:

Question # 14

In a simple microscope if the final image is located at infinity then its magnifying power is

Question # 15

To get high resolving power for a telescope one should use

Question # 16

The light signal in graded index fibre is totally confined due to

Question # 17

At what distance should a book be placed from a 50 Cd bulb so that the luminance on the book becomes 2 Im m-2

Question # 18

The transmitter in optical fiber system contains a device called

Question # 19

In Newton,s rings apparatus, we also use

Question # 20

In the Young's double slit experiment the separation between the slits is halved and the distance between the slits and the screen is doubled the fringe width is

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MCAT Physics Chapter 7 Important MCQ's

Sr.# Question Answer
1 Which light travels faster in optical fibres?
A. visible light
B. ultraviolet
C. infra-red
D. any one of them
2 The fiber of which refractive index ______ gradually as move from central core to its periphery is called ______ index fiber
A. Decreases, multi-mode graded
B. Increases, single mode step
C. Either of A or B
D. Increases, multi-mode step
3 Spectrum of sun consists of
A. Bright lines
B. Dark lines
C. Bright bands
D. Dark bands
4 A telescope has an objective of focal length 10 cm the magnifying power of telescope is 5.Its length in normal adjustment is
A. 7.5cm
B. 10.5 cm
C. 12 cm
D. 15 cm
5 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
6 In Newton's rings the point of contact of the lens and the glass plate, the air film is
A. Minimum
B. Maximum
C. Zero
D. None of these
7 Intensities of the two waves of light are I and 4I.The maximum intensity of the resultant wave after superposition is
A. 5I
B. 9I
C. 16I
D. 25I
8 The bright fringes are termed as
A. minimum
B. maximum
C. bright spots
D. dark spots
9 The principle of Michelson's interferometers is
A. Refraction
B. Dispersion
C. Interference
D. Reflection
10 Single mode step index fibre has a very thin core of about diameter
A. 5.5 μm
B. 9.5 μm
C. 5.0 μm
D. All of these

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