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

Angle between ray of light and the corresponding wavefront is

Question # 2

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

Question # 3

Electromagnetic waves transport

Question # 4

Laws of reflection and refraction can also be explained by

Question # 5

Light waves are

Question # 6

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

Question # 7

The terms phase difference and path difference are

Question # 8

The wave nature of light was proposed by

Question # 9

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

Question # 10

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

Question # 11

Wavelength of light, on the average, is given by

Question # 12

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

Question # 13

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

Question # 14

Monochromatic light means wave of

Question # 15

Light waves are

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ECAT Physics Chapter 10 Important MCQ's

Sr.# Question Answer
1 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
2 Light has
A. Wave nature
B. Dual nature
C. Particle nature
D. None of them
3 Light waves are
A. Transverse waves
B. Longitudinal waves
C. Compressional
D. None of them wave
4 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
5 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
6 Two sources are said to be coherent if they have
A. Same amplitude
B. Same wavelength
C. Definite phase relation with each other
D. None of them
7 In an interference pattern of Young's Double Slit (YDS) experiment
A. Bright fringes are wider than dark fringes
B. Dark fringes are wider than bright fringes
C. Both dark and bright fringes are of equal width
D. Central fringes are wider than the outer fringes
8 Huygen's principle states that
A. Light travels in straight line
B. Light has dual nature
C. Either of these
D. None of these
9 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
10 Monochromatic light means wave of
A. Same frequency
B. Same colour
C. Same Wavelength
D. All of them

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