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

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

Question # 2

In YDS experiment, fringe spacing means the distance between two consecutive ____fringes.

Question # 3

The contrast in the fringes in an interference pattern depends upon

Question # 4

The superposition of the two waves of same frequency and amplitude travelling in the same direction gives to an effect called

Question # 5

A ray passing through optical center of a lens, after refraction:

Question # 6

In order to get interference using two light rays

Question # 7

Light has:

Question # 8

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

Question # 9

The locus of all points in a medium having same phase of vibration is called

Question # 10

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

Question # 11

The focal length of convex lens having magnifying power of 5.55 is:

Question # 12

The least distance of distinct vision is:

Question # 13

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

Question # 14

The ratio of the diameter of two convex lenses is _____-the ratio of their focal lengths:

Question # 15

The magnifier forms a virtual image of the object at:

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ECAT Physics Chapter 9 Important MCQ's

Sr.# Question Answer
1 A virtual image is formed when object is placed:
A. Within focal length of a convex lens
B. Near the focal point of a concave lens
C. Both A and B
D. Away from 2F of a convex lens
2 The appearance of the colour in the soap (oil) film results from:
A. Dispersion
B. Interference
C. Reflection
D. Refraction
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 Frequency of red color as compared to that of violet color is:
A. Equal
B. Smaller
C. Greater
D. None of these
5 The magnifier forms a virtual image of the object at:
A. None of these
B. Least distance of distinct vision
C. Much farther than the least distance
D. Both A and B are correct
6 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
7 In case of destructive interference of two waves, the amplitude of the resultant wave will be ____ either of the waves:
A. Greater than
B. Smaller than
C. Equal to
D. None of these
8 Monochromatic light means waves of:
A. Same frequency
B. Same colour
C. Same wavelength
D. All of them
9 The size of the image is maximum when its distance from the magnifying glass is:
A. 0.10 m
B. 0.15 m
C. 0.20 m
D. 0.25 m
10 Light has:
A. Wave nature
B. Particle nature
C. Dual nature
D. None of these

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