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

Does the dilation mean that time really passes more slowly in moving system or that it only seems to pass more slowly.Explain briefly.

  • Ans 1: According to dilation formula
    t="
    This relation show that a clock moving with respect to an observe appears to move slow then it does when it is at rest with respecttohim.So the moving clocks just appears to run slowly to the observer at rest.Hence time dilation is an apparent change and it only seems to pass more slowly but not actually.
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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

Does the dilation mean that time really passes more slowly in moving system or that it only seems to pass more slowly.Explain briefly.

  • Ans 1: According to dilation formula
    t="
    This relation show that a clock moving with respect to an observe appears to move slow then it does when it is at rest with respecttohim.So the moving clocks just appears to run slowly to the observer at rest.Hence time dilation is an apparent change and it only seems to pass more slowly but not actually.
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12th Class Physics Chapter 8 Short Questions Preparation - Set 2

Question # 1

If you are moving in a spaceship at very high speed relative to the earth.Would you notice difference(a)In your pulse rate(b)In the pulse rate of people on the earth?

  • Ans 1:
    1. The pulse rate of the person inside the spaceship moving with large velociety will decrease.
    2. The pulse rate of the people on the earth with respect to the person inside the spaceship with large velocity will increase.
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12th Class Physics Chapter 8 Short Questions Preparation - Set 3

Question # 1

Why don't we observe a Compton Effect with visible light?

  • Ans 1: The frequency of visible light is less than x rays,And the wavelength of visible light is much greater than the Compton of wavelength of electron,So compton effect can not observed with visible light.
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12th Class Physics Ch 19 Preparation

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