Fsc part 2 online preparation for physics chapter 19 (modern physics)

Online Short Questions For Chapter 8 "12th Class Physics Chapter 8 Short Questions Preparation "

Try The Short Questions For 12th Class Physics Chapter 8 Short Questions Preparation

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Physics - 12th Class Physics Chapter 8 Short Questions Preparation

Question # 1

When does light behaves as a wave?When does light behaves as a particle?

  • Ans 1: Light behave as a wave when it propagates from one place to other and light behave as a particle when it interacts with matter,Light behaves as a wave in interference and diffraction,Light behaves as a particle in photoelectric and Compton effect.
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Prepare Complete Set Wise Questions For Chapter 8 "12th Class Physics Chapter 8 Short Questions Preparation "

12th Class Physics Chapter 8 Short Questions Preparation - Set 1

Question # 1

When does light behaves as a wave?When does light behaves as a particle?

  • Ans 1: Light behave as a wave when it propagates from one place to other and light behave as a particle when it interacts with matter,Light behaves as a wave in interference and diffraction,Light behaves as a particle in photoelectric and Compton effect.
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12th Class Physics Chapter 8 Short Questions Preparation - Set 2

Question # 1

Define Compton effect.Write formula of Compton shift for scattering angle.

  • Ans 1: When X-rays are scattered by loosely bound electrons from a graphite target,the phenomena of change in wavelength is known as Compton Effect.Compton shift for scattering angle is given

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12th Class Physics Chapter 8 Short Questions Preparation - Set 3

Question # 1

We do not notice the de-Broglie wavelength for a pitched cricket ball.Explain why?

  • Ans 1: According to de-Broglie hypothesis

    λ =h/mv

    As cricket ball has large mass,therefore wavelength of wavelength associated with it is so small that is not detectable.
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19th Chapter

12th Class Physics Ch 19 Preparation

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