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

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Question # 1

Laws of reflection and refraction can also be explained by:

Question # 2

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

Question # 3

Wave length of that color as compared to that of violet color is:

Question # 4

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

Question # 5

In order to get interference using two light rays

Question # 6

Frequency of red color as compared to that of violet color is:

Question # 7

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

Question # 8

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

Question # 9

To sources are said to be coherent if they have:

Question # 10

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

Question # 11

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

Question # 12

The wave nature of light was proposed by:

Question # 13

The least distance of distinct vision is:

Question # 14

A ray passing through optical center of a lens, after refraction:

Question # 15

Monochromatic light means waves of:

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ECAT Physics Chapter 9 Important MCQ's

Sr.# Question Answer
1 Monochromatic light means waves of:
A. Same frequency
B. Same colour
C. Same wavelength
D. All of them
2 The image of an object 5 mm length is only 1 cm high. The magnification produced by lens is:
A. 1
B. 0.2
C. 2
D. 0.1
3 A grating with high resolving power can distinguish _______ difference in wavelengths :
A. Smaller
B. Larger
C. Zero
D. None of these
4 Angle between the ray of light and the corresponding wavefront is:
A. 0°
B. 60°
C. 90°
D. 120°
5 Huygen's principles states that:
A. Light has dual nature
B. Either of these
C. None of these
D. Light travels in straigth line
6 A magnifier gives an image which is:
A. Virtual, inverted
B. Real, erect
C. Virtual, erect
D. Real, inverted
7 With age, least distance of distinct vision:
A. Increases
B. Decreases
C. Is not affected
D. None is correct
8 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
9 Electromagnetic waves transport:
A. Energy only
B. Momentum only
C. Both A and B are correct
D. None of is correct
10 The locus of all points in a medium having same phase of vibration is called
A. Crest
B. Trough
C. Wavelength
D. Wave-front

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