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

00:00
Question # 1

Light has

Question # 2

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

Question # 3

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

Question # 4

Wavelength of light, on the average, is given by

Question # 5

In case of point source of light, shape of wavefront is

Question # 6

Light waves are

Question # 7

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

Question # 8

Huygen's principle states that

Question # 9

Angle between ray of light and the corresponding wavefront is

Question # 10

Two sources are said to be coherent if they have

Question # 11

Huygen principle is used to determine

Question # 12

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

Question # 13

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

Question # 14

In case of constructive interference of two waves, the amplitude of the resultant wave is __________ either of the waves

Question # 15

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

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ECAT Physics Chapter 10 Important MCQ's

Sr.# Question Answer
1 When the source of light is at very large distance, the shape of wavefront is
A. Spherical
B. Cylindrical
C. Plane
D. None of these
2 The wave nature of light was proposed by
A. Newton
B. Thomas Young
C. Huygen
D. None of these
3 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
4 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
5 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
6 To observe interference of light, the condition, which must be met with is that the sources must be
A. Monochromatic
B. Phase coherent
C. Both of above
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 Wavelength of light, on the average, is given by
A. 10-14m
B. 10-10m
C. 10-6m
D. 10-4m
9 Frequency of red colour as compared to that of violet colour is
A. Equal
B. Smaller
C. Greater
D. None of these
10 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

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