ECAT Pre Computer Science Chapter 9 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 9 Physical Optics

Try The MCQ's Test For ECAT Physics Chapter 9 Physical Optics

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ECAT Physics Chapter 9 Physical Optics

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Question # 1

A convex lens acts as diverging lens when the object is placed:

Question # 2

Speed of light in vacuum depends upon:

Question # 3

Huygen principle is used to determine:

Question # 4

Light has:

Question # 5

Light waves are:

Question # 6

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

Question # 7

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

Question # 8

A grating with high resolving power can distinguish _______ difference in wavelengths :

Question # 9

The terms phase difference and path difference are:

Question # 10

A convex lens acts as diverging lens when the object is placed:

Question # 11

The size of the image is maximum when its distance from the magnifying glass is:

Question # 12

If the focal length of the convex lens is 5 cm, then to get the real and inverted image of the same size as that of object, the object should be placed at:

Question # 13

The wave nature of light was proposed by:

Question # 14

The magnifier forms a virtual image of the object at:

Question # 15

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

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ECAT Physics Chapter 9 Important MCQ's

Sr.# Question Answer
1 Which one of the following phenomenon cannot be explained on the bases of Huygen's theory
A. Refraction
B. Reflection
C. Diffraction
D. Formation of spectrum
2 Speed of light in vacuum depends upon:
A. Frequency
B. Wavelength
C. Amplitude
D. None of these
3 Huygen principle is used to determine:
A. Speed of light
B. Location of wavefront
C. About polarized or unpolarized light
D. None of them
4 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
5 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
6 If the focal length of the convex lens is 5 cm, then to get the real and inverted image of the same size as that of object, the object should be placed at:
A. 5 cm
B. 20 cm
C. 10 cm
D. 15 cm
7 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
8 Resolving power in mth order diffraction for grating is given by:
A. R = N/m
B. R = m/N
C. R = N x m
D. None of these
9 The appearance of the colour in the soap (oil) film results from:
A. Dispersion
B. Interference
C. Reflection
D. Refraction
10 Light waves are:
A. Transverse wave
B. Longitudinal wave
C. Compressional wave
D. None of them

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