ICS Part 2 Physics Chapter 19 Short Questions Preparation


12th Class Physics
Short Questions Preparation

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Physics - ICS Part 2 Physics Chapter 19 Short Questions Preparation

Question # 1

Define pair production and annihilation of matter.

  • Ans 1: Pair production:The change of very high energy photon into an electron,positron pair is called pair production.
    Annihilation of matter:When a positron comes close to an electron,they annihilation and produce two photons in the gamma rays range.It is called annihilation of matter.
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Prepare Complete Set Wise Questions For Chapter 8 "ICS Part 2 Physics Chapter 19 Short Questions Preparation "

ICS Part 2 Physics Chapter 19 Short Questions Preparation - Set 1

Question # 1

Define pair production and annihilation of matter.

  • Ans 1: Pair production:The change of very high energy photon into an electron,positron pair is called pair production.
    Annihilation of matter:When a positron comes close to an electron,they annihilation and produce two photons in the gamma rays range.It is called annihilation of matter.
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ICS Part 2 Physics Chapter 19 Short Questions Preparation - Set 2

Question # 1

Is it possible to create a single electron from energy?Explain

  • Ans 1: No it is not possible to create a single electron from energy.Creation of single electron will be against the law of conservation of charge and the law of conservation of momenteum.In pair production an electron positron pair is produces.
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ICS Part 2 Physics Chapter 19 Short Questions Preparation - Set 3

Question # 1

Which has the lower energy quanta,radio waves or x rays?Explain

  • Ans 1: Energy of quanta is given as E=hf-hc/lamda
    Radio waves length has longer wavelength,Therefore radio waves has lower energy quanta.
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ICS Part 2 Physics Chapter 19 Short Questions Preparation

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