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

Characteristics of optic fibre is/are

Question # 2

There will be no change in _______ of light entering glass

Question # 3

The ratio of fringes with for bright and dark fringes is

Question # 4

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

Question # 5

The unpolarized light is

Question # 6

Let a ray of light enters from air into two media of different refractive indices. The speed of light will be ______ to refractive index

Question # 7

Such a surface on which all the points have the same phase of vibration is known as

Question # 8

Which one of the following can act approximately as a source of monochromatic light:

Question # 9

Newton's rings are:

Question # 10

Intensities of the two waves of light are I and 4I.The maximum intensity of the resultant wave after superposition is

Question # 11

Light appears to travels in straight lines since

Question # 12

Which light travels faster in optical fibres?

Question # 13

The angle of incidence at which angle of refraction becomes 900 is called

Question # 14

Which of the following is not an application of polarization

Question # 15

Which of the following is an optical fibre in which the density of central core decreases towards its periphery?

Question # 16

The concentration in solution can be determined by the property known as

Question # 17

Star twinkle due to

Question # 18

The critical angle for a ray of light suffering total internal reflection will be smallest for the ray traveling from

Question # 19

In the thin film, the path difference between the two reflecting waves depends upon

Question # 20

The cause of power loss in optic fibre 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 A single step index fibre can carry more than
A. 14 TV channels
B. 14,000 phone calls
C. 16 TV channels
D. a and b
2 For glass-air boundary, the value of the critical angle is
A. 42°
B. 45°
C. 30°
D. 60°
3 If the moveable mirror in Michelsion's interferometer moves a distanceλ/2, the path difference changes by
A. λ/4
B. λ/2
C. λ
D. 3/2λ
4 The diffraction grating is used to determine
A. Intensity of light
B. Wavelength of light
C. Refractive index of prism
D. None of these
5 The position of a new wavefront after a certain interval of time can be found by constructing a surface that is
A. A tangent
B. A tangent envelope
C. Curved surface
D. None of these
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 Commercial polarizing material is
A. Colour glass
B. Infra red glass
C. Polaroid glass
D. None of these
8 If a point source of light is placed at the focus of a convex lens the rays coming out of the lens will constitute
A. Plane wave fronts
B. Cylindrical wave fronts
C. Spherical wave fronts
D. All of above
9 A spectrometer is used to find
A. Wavelength of light
B. Refractive index of the prism
C. Angle of minimum deviation of prism
D. All of these
10 The image of an object 5 mm length is only 1 cm high. The magnification of the lens is
A. 1
B. 0.2
C. 2
D. 0.1

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