ICS Part 2 Physics Chapter 20 Short Questions Preparation


12th Class Physics
Short Questions Preparation

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Physics - ICS Part 2 Physics Chapter 20 Short Questions Preparation

Question # 1

Give two uses of laser in medicine and industry.

  • Ans 1: Laser is used
    1. For welding detached retinas
    2. To destroy cancerous and precancerous cells.
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Prepare Complete Set Wise Questions For Chapter 9 "ICS Part 2 Physics Chapter 20 Short Questions Preparation "

ICS Part 2 Physics Chapter 20 Short Questions Preparation - Set 1

Question # 1

Give two uses of laser in medicine and industry.

  • Ans 1: Laser is used
    1. For welding detached retinas
    2. To destroy cancerous and precancerous cells.
Submit

ICS Part 2 Physics Chapter 20 Short Questions Preparation - Set 2

Question # 1

Differentiate between Line and Band spectrum.

  • Ans 1: Line spectrum: When electron jumps from higher orbit to lower orbit ,it emits energy,This emission of energy constitutes spectral line,This is called the line spectrum.
  • Ans 2: Band spectrum:is produced by molecules,They are the groups of lines which are closely spaced to another.
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ICS Part 2 Physics Chapter 20 Short Questions Preparation - Set 3

Question # 1

What are the difference between laser light and ordinary light?

  • Ans 1: The laser light is intense ,unidirectional and phase coherent ,so it does bit spread as compared to ordinary light.
    The energy of laser can be focused at a point to get enough heat for welding which is not possible with ordinary light.
    A laser beam is used as a surgical tool for welding detached retina which ordinary light can not do.
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ICS Part 2 Physics Chapter 20 Short Questions Preparation