ICS Part 2 Physics Chapter 20 Short Questions Preparation


12th Class Physics
Short Questions Preparation

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Online Short Questions For Chapter 9 "ICS Part 2 Physics Chapter 20 Short Questions Preparation "

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Physics - ICS Part 2 Physics Chapter 20 Short Questions Preparation

Question # 1

In which region of electromagnetic spectrum does the following series fall (a)Lyman series (b)Balmer series?

  • Ans 1: Balmer series falls in the visible region.
    Lyman series falls in the ultraviolet region.
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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

In which region of electromagnetic spectrum does the following series fall (a)Lyman series (b)Balmer series?

  • Ans 1: Balmer series falls in the visible region.
    Lyman series falls in the ultraviolet region.
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ICS Part 2 Physics Chapter 20 Short Questions Preparation - Set 2

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 - Set 3

Question # 1

Bohr's theory of hydrogen atom is based upon several assumptions.Do any of these assumptions contradict classical physics?

  • Ans 1: Bohr's first assumptions contradicts classical physics.Bohr said that electron do not radiate energy during revolving while according to classical physics,electron radiate energy during revolving and fall into the nucleus which is impossible.
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Physics
20th Chapter

ICS Part 2 Physics Chapter 20 Short Questions Preparation

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