ECAT Pre Engineering Physics Chapter 10 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 10 Optical Instruments

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 10 Optical Instruments

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Physics ECAT Pre Engineering Chapter 10 Optical Instruments

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Question # 1

The terms phase difference and path difference are

Question # 2

Light waves are

Question # 3

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

Question # 4

To observe interference of light, the condition, which must be met with is that the sources must be

Question # 5

A line which represents the direction of travel of a wave is known as

Question # 6

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

Question # 7

In YDS experiment, fringe spacing means the distance between two consecutive _________ fringes

Question # 8

Light has

Question # 9

Electromagnetic waves transport

Question # 10

Frequency of red colour as compared to that of violet colour is

Question # 11

Wavelength of light, on the average, is given by

Question # 12

Laws of reflection and refraction can also be explained by

Question # 13

The appearance of colours in the soap (or oil) film results from

Question # 14

When the source of light is at very large distance, the shape of wavefront is

Question # 15

Huygen's principle states that

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ECAT Physics Chapter 10 Important MCQ's

Sr.# Question Answer
1 Huygen's principle states that
A. Light travels in straight line
B. Light has dual nature
C. Either of these
D. None of these
2 Electromagnetic waves transport
A. Energy only
B. Momentum only
C. Both A and B
D. None is correct
3 The property of light which does not change with the nature of the medium is
A. Frequency
B. Amplitude
C. Wavelength
D. None of these
4 A line which represents the direction of travel of a wave is known as
A. Spherical wavefront
B. Locus
C. Ray
D. Either B or C
5 Monochromatic light means wave of
A. Same frequency
B. Same colour
C. Same Wavelength
D. All of them
6 The speed of the secondary wavelets as mentioned in Huygen's principle is ________ the speed of propagation of the wave itself
A. Equal to
B. Greater than
C. Smaller than
D. None of these
7 Frequency of red colour as compared to that of violet colour is
A. Equal
B. Smaller
C. Greater
D. None of these
8 Light has
A. Wave nature
B. Dual nature
C. Particle nature
D. None of them
9 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
10 The locus of all the points in the same phase of vibration is called
A. Wave pocket
B. Wavefront
C. Wave number
D. None of these

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