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

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MDCAT Physics Chapter 7 Light Online Test

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Question # 1

Identify the incorrect statement

Question # 2

If the thickness of the film and angle of incidence are such that two reflected waves cancel each other the film will look

Question # 3

A two-slit arrangement is set up to produce an interference pattern on a screen. The fringes are too close together for convenient observation. How could the distance between them be increased?

Question # 4

The dichronic substances are used in the process getting plane polarized light

Question # 5

A ray of light always points

Question # 6

Which of the following gives three regions of the electromagnetic spectrum in order of increasing wavelength?

Question # 7

Single mode step index fibre has a very thin core of about diameter

Question # 8

In the formulaαamino = 1.22λ/D, D denotes

Question # 9

In Multimode step index fibre the refractive index from its centre to the boundary is

Question # 10

The regular array of atoms in a crystal has spacing of the order of

Question # 11

The blue color of sky is due to:

Question # 12

The distance between the top adjacent slits on diffraction grating is called

Question # 13

The path difference and phase difference are related to each other as

Question # 14

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

Question # 15

In case of constructive interference of two waves, the amplitude of the resultant wave is_____either of the waves:

Question # 16

Repeaters are the devices which regenerate the signals and are placed at about

Question # 17

The wavelength of light is 6000°A, the number of waves continued in 0.01 m distance will be

Question # 18

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 # 19

In cause of YDS experiment, the distance between adjacent bright fringes is given by

Question # 20

The speed of light in a medium of refractive index 1.5 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 The relation for the diffraction pattern, when it is minimum
A. d/2 sin θ = λ
B. sin θ = λ/2
C. d sin θ = λ
D. None of these
2 The diffraction is found to be prominent when the wavelength of light is
A. small as compared with the size of obstacle
B. large as compared with the size of obstacle
C. equal as compared with the size of obstacle
D. Very small as compared with the size of the obstacle
3 In Young's double slit experiment,the separation between the slits is made 3 fold the fringe width becomes
A. 1/3 times
B. 1/9 times
C. 3 times
D. 9 times
4 How many phone calls can be carried by single mode step index fibre
A. 25000
B. 96000
C. 14000
D. 21000
5 A convex lens has focal length F.An object is placed at P then
A. Image is formed at + ∞ and is real
B. Image is formed at + ∞ and is virtual
C. Image is formed at + ∞ and is real
D. Image is formed at + and is virtual
6 A usual way to obtain a plane wave is to place point source of light at the focus of a
A. concave lens
B. convex lens
C. both of them
D. either of them
7 The refracting edge of the prism must be parallel to the axis of rotation of the telescope, so that the turn table is leveled using
A. Screws of the spectrometer
B. Leveling screws
C. Turn table screw
D. None of these
8 The speed of light in a medium of refractive index 1.5 is
A. 3 x 108ms-1
B. 4.5 x 108ms-1
C. 2.0 x 108ms-1
D. None of these
9 One cannot see through fog because
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
10 If the plane polarized light is incident on the second sheet of Polaroid, no light is emitted when their axes are
A. Parallel to each other
B. Perpendicular to each other
C. In between two positions
D. None of these

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