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

What do you mean by the term wavefront and ray of light?

  • Ans 1: Such a surface on which all the points have same phase of vibration is known as wavefront.
    A line normal to wavefront including the direction of motion is called a ray of light.
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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

What do you mean by the term wavefront and ray of light?

  • Ans 1: Such a surface on which all the points have same phase of vibration is known as wavefront.
    A line normal to wavefront including the direction of motion is called a ray of light.
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ICS Part 1 Physics Chapter 9 Short Questions Test - Set 2

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 3

Question # 1

If white light is incident on a film of irregular thickness at all possible angles,what will be the pattern of interference fringes? Explain your answer.

  • Ans 1: If white light is incident on a film of irregular thickness at all possible angles, we should consider the interference pattern due to each spectral colour separately. If at a certain place condition of destructive interference of one colour is satisfied then that portion of film will exhibit the remaining constituent colours of white light.
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ICS Part 1 Physics Short Questions Test

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