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Electromagnetic...

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  • Question 1
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    According to Maxwell ’s equations

  • Question 2
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    Electromagnetic waves for TV and radio have a frequency about

     

  • Question 3
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    Plane electromagnetic wave travels in vacuum along z-direction. If the frequency of the wave is 30 MHz, its wavelength is

  • Question 4
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    Electromagnetic waves propagate

  • Question 5
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    State the part of the electromagnetic spectrum to which 1057 MHz (frequency of radiation arising from two close energy levels in hydrogen; known as Lamb shift)..Belongs

  • Question 6
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    Long distance radio broadcasts use short-wave bands because

  • Question 7
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    Which of these mechanisms can be used to produce electromagnetic waves?

  • Question 8
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    Microwaves have a frequency of about

     

  • Question 9
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    The amplitude of the magnetic field part of a harmonic electromagnetic wave in vacuum is  B0 = 510 nT. Amplitude of the electric field part of the wave is

  • Question 10
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    It is necessary to use satellites for long distance TV transmission because

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