ECAT Pre Computer Science Chapter 10 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 10 Optical Instruments

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

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ECAT Physics Chapter 10 Optical Instruments

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Question # 1

Wavelength of light, on the average, is given by

Question # 2

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

Question # 3

The speed of the secondary wavelets as mentioned in Huygen's principle is ________ the speed of propagation of the wave itself

Question # 4

Huygen's principle states that

Question # 5

Light has

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

In case of destructive interference of two waves, the amplitude of the resultant wave will be __________ either of the waves.

Question # 13

Electromagnetic waves transport

Question # 14

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

Question # 15

Huygen principle is used to determine

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ECAT Physics Chapter 10 Important MCQ's

Sr.# Question Answer
1 The appearance of colours in the soap (or oil) film results from
A. Dispersion
B. Interference
C. Reflection
D. Refraction
2 Light has
A. Wave nature
B. Dual nature
C. Particle nature
D. None of them
3 Monochromatic light means wave of
A. Same frequency
B. Same colour
C. Same Wavelength
D. All of them
4 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
5 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
6 In case of point source of light, shape of wavefront is
A. Spherical
B. Cylindrical
C. Plane
D. None of above
7 In YDS experiment, fringe spacing means the distance between two consecutive _________ fringes
A. Bright
B. Dark
C. Any of A or B
D. None of these
8 Light waves are
A. Transverse waves
B. Longitudinal waves
C. Compressional
D. None of them wave
9 The terms phase difference and path difference are
A. Same
B. Different
C. Equal
D. none of these
10 Electromagnetic waves transport
A. Energy only
B. Momentum only
C. Both A and B
D. None is correct

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