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

Electromagnetic waves transport:

Question # 2

Least distance of distinct vision of an old man possibly becomes:

Question # 3

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

Question # 4

When the same object is viewed at a shorter distance, the image on the retina of the eye is _____ the so the object appears:

Question # 5

In order to get interference using two light rays

Question # 6

The image of an object 5 mm length is only 1 cm high. The magnification produced by lens is:

Question # 7

To sources are said to be coherent if they have:

Question # 8

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

Question # 9

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

Question # 10

Light waves are:

Question # 11

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 # 12

To see the minor details of the object by microscope, it should have:

Question # 13

Resolving power in mth order diffraction for grating is given by:

Question # 14

Huygen's principles states that:

Question # 15

Huygen's theory cannot explain

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ECAT Physics Chapter 9 Important MCQ's

Sr.# Question Answer
1 Wave length of light, on the average, is given by:
A. 10-14m
B. 10-10m
C. 10-6m
D. 10-4m
2 Speed of light in vacuum depends upon:
A. Frequency
B. Wavelength
C. Amplitude
D. None of these
3 The velocity of light in vacuum can be changed by changing
A. Frequency
B. Amplitude
C. Wavelength
D. None of these
4 To see the minor details of the object by microscope, it should have:
A. High magnifying power
B. High resolving power
C. Am objective of larger focal length
D. None of these
5 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
6 Light has:
A. Wave nature
B. Particle nature
C. Dual nature
D. None of these
7 A magnifier gives an image which is:
A. Virtual, inverted
B. Real, erect
C. Virtual, erect
D. Real, inverted
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 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
10 Huygen principle is used to determine:
A. Speed of light
B. Location of wavefront
C. About polarized or unpolarized light
D. None of them

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