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Electromagnetic...

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  • Question 1
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    Velocity of plane electromagnetic waves in vacuum equals

     

  • Question 2
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    Tanning of the skin in sunlight is due to

     

  • Question 3
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    A charged particle oscillates about its mean equilibrium position with a frequency of  109  Hz. Frequency of the electromagnetic waves produced by the oscillator is

     

  • Question 4
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    If the earth did not have an atmosphere, would its average surface temperature be higher or lower than what it is now?

     

  • Question 5
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    Do EM waves need a medium to travel through?

     

  • Question 6
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    Comparing X-rays and Gamma rays

     

  • Question 7
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    7.5 MHz to 12 MHz band corresponds to wavelength band of

     

  • Question 8
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    The speed of plane electromagnetic waves is maximum in

     

  • Question 9
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    When white light is split into its component colors by a prism

     

  • Question 10
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    Some scientists have predicted that a global nuclear war on the earth would be followed by a severe ‘nuclear winter ’with a devastating effect on life on earth. What might be the basis of this prediction?

     

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