ECAT Pre Engineering Physics Chapter 9 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 9 Physical Optics

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 9 Physical Optics

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Physics ECAT Pre Engineering Chapter 9 Physical Optics

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Question # 1

The magnifier forms a virtual image of the object at:

Question # 2

If the object is situated at focus of a convex lens, then its image is formed at:

Question # 3

The locus of all the points in the same phase of vibration is called:

Question # 4

A virtual image is formed when object is placed:

Question # 5

Angle between the ray of light and the corresponding wavefront is:

Question # 6

The property of light which does not change with the nature of the medium is:

Question # 7

How is the image formed by a convex lens affected if the upper half of the lens is covered with a paper:

Question # 8

Light waves are:

Question # 9

When the object lies between F and 2F, the image formed by is formed at:

Question # 10

The contrast in the fringes in an interference pattern depends upon

Question # 11

Huygen's theory cannot explain

Question # 12

A prism splits a beam of white light into seven component colors. This is so because

Question # 13

To see the minor details of the object by microscope, it should have:

Question # 14

Electromagnetic waves transport:

Question # 15

The appearance of the colour in the soap (oil) film results from:

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ECAT Physics Chapter 9 Important MCQ's

Sr.# Question Answer
1 The distance from eye to near point is taken as:
A. 10 cm
B. 15 cm
C. 20 cm
D. 25 cm
2 In case of point, source of light shape of wavefront is:
A. Spherical
B. Cylindrical
C. Plane
D. None of these
3 Resolving power in mth order diffraction for grating is given by:
A. R = N x m
B. None of these
C. R = m/N
D. R = N/m
4 Light appears to travel in straight line because
A. It is not absorbed by the atmosphere
B. It is refracted by the atmosphere
C. Its wavelength is very small
D. Its velocity is very large
5 The terms phase difference and path difference are:
A. Same
B. Different
C. Equal
D. None of these
6 How is the image formed by a convex lens affected if the upper half of the lens is covered with a paper:
A. The upper half of the image is cut off
B. The brightness of the image is reduced
C. The brightness of the image is increased
D. No effect at all
7 In case of constructive interference of two waves, the amplitude of the resultant wave is _______ either of the waves:
A. Greater than
B. Equal to
C. Smaller than
D. None of these
8 Light waves are:
A. Transverse wave
B. Longitudinal wave
C. Compressional wave
D. None of them
9 A prism splits a beam of white light into seven component colors. This is so because
A. Phase of different colors is different
B. Amplitude of different colors is different
C. Wavelength of different colors is different
D. Velocity of different colors is different
10 Conventionally, all the distance p, q, f are measured from _____ of the lens:
A. Focus
B. Optical center
C. Edges
D. None of these

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