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

00:00
Question # 1

The wave nature of light was proposed by:

Question # 2

The terms phase difference and path difference are:

Question # 3

In the formula R = N x m for diffraction grating, N denotes:

Question # 4

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

Question # 5

Monochromatic light means waves of:

Question # 6

Electromagnetic waves transport:

Question # 7

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

Question # 8

In an interference pattern of Young's double slit(YDS) experiment:

Question # 9

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

Question # 10

The velocity of light in vacuum can be changed by changing

Question # 11

Angle between the ray of light and the corresponding wavefront is:

Question # 12

Certain light of wavelength 600 nm is used to view an object under the microscope. If the aperture of its objective is 1.22 cm, then the limiting angle of resolution will be:

Question # 13

How is the image formed by a convex lens affected if the upper half of the lens is covered with a paper:

Question # 14

The contrast in the fringes in an interference pattern depends upon

Question # 15

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

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ECAT Physics Chapter 9 Important MCQ's

Sr.# Question Answer
1 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
2 The velocity of light in vacuum can be changed by changing
A. Frequency
B. Amplitude
C. Wavelength
D. None of these
3 A grating with high resolving power can distinguish _______ difference in wavelengths :
A. Smaller
B. Larger
C. Zero
D. None of these
4 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
5 The cause of mirage observed in deserts in bright sunlight is due to
A. Refraction of light
B. Reflection of light
C. Scattering of light
D. Total internal reflection of light
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 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
8 When the object lies between F and 2F, the image formed by is formed at:
A. Virtual
B. Diminished
C. Erect
D. Real
9 Electromagnetic waves transport:
A. Energy only
B. Momentum only
C. Both A and B are correct
D. None of is correct
10 Huygen's principles states that:
A. Light has dual nature
B. Either of these
C. None of these
D. Light travels in straigth line

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