ICS Part 1 Physics English Medium Chapter 9 Online Short Questions Test with Answers

Online Short Questions For Chapter 9 "ICS Part 1 Physics Chapter 9 Short Questions Test "

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Physics - ICS Part 1 Physics Chapter 9 Short Questions Test

Question # 1

In Newton's rings, Why are the fringes circular?

  • Ans 1: The thickness of the air film between plano-convex lens and plane glass plate is almost zero at the point of contact "o" and gradually increases as we proceed towards the periphery of the lens. Thus, points where the thickness of air film is constant will lie on a circle with "o" as centre. That is why circular fringes are produced.
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Prepare Complete Set Wise Questions For Chapter 9 "ICS Part 1 Physics Chapter 9 Short Questions Test "

ICS Part 1 Physics Chapter 9 Short Questions Test - Set 1

Question # 1

In Newton's rings, Why are the fringes circular?

  • Ans 1: The thickness of the air film between plano-convex lens and plane glass plate is almost zero at the point of contact "o" and gradually increases as we proceed towards the periphery of the lens. Thus, points where the thickness of air film is constant will lie on a circle with "o" as centre. That is why circular fringes are produced.
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ICS Part 1 Physics Chapter 9 Short Questions Test - Set 2

Question # 1

What do you mean by coherent source ? Explain a common method for producing two coherent sources.

  • Ans 1: The monochromatic sources of light which emit waves, having a constant phase difference are called coherent sources.
    A common method of producing two coherent light beams is to use a monochromatic source to illuminate a screen containing two small holes, usually in the shape of slits. The light emerging from the two slits is coherent because a single source produces the original beam and two slits serve only too split it into two parts.
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ICS Part 1 Physics Chapter 9 Short Questions Test - Set 3

Question # 1

Can you obtain plane polarized light from un-polarized light? If your answer is yes, write the name of two processes by which plane polarized light is obtained.

  • Ans 1: Yes , we can obtain plane polarized light from un-polarized light.
    This can be achieved by processes such as
    • Selective absorption
    • Reflection from different surfaces
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ICS Part 1 Physics Short Questions Test

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