ECAT Physics Chapter 9 Physical Optics Online Test

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  • Chapter NameCh 9 - Physical Optics
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ECAT Physics Chapter 9 Physical Optics Online Test

  • Total Questions15

  • Time Allowed20

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ECAT Physics Chapter 9 Physical Optics Online Test

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Question # 1

When a source of light isat very large distance,the shape of wavefront is:

Question # 2

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

Question # 3

Wave length of light, on the average, is given by:

Question # 4

A line which represents the direction of travel of a wave is known as:

Question # 5

In case of destructive interference of two waves, the amplitude of the resultant wave will be ____ either of the waves:

Question # 6

Huygen's theory cannot explain

Question # 7

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

Question # 8

Electromagnetic waves transport:

Question # 9

In order to get interference using two light rays

Question # 10

Speed of light in vacuum depends upon:

Question # 11

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

Question # 12

Light waves are:

Question # 13

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

Question # 14

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

Question # 15

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

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