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Electromagnetic...

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  • Question 1
    4 / -1

    Clouds are contained in a layer from the earth’s surface, which is called

  • Question 2
    4 / -1

    Radio waves of constant amplitude can be generated with

  • Question 3
    4 / -1

    If a source is transmitting electromagnetic wave of frequency 8.2 × 106 Hz, then wavelength of the electro-magnetic waves transmitted from the source will be

  • Question 4
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    Which of the following rays are not electromagnetic wave?

  • Question 5
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    An electromagnetic wave of frequency v = 3.0 MHz passes vacuum into a delectric medium with permittivity ∈ = 4.0. Then

  • Question 6
    4 / -1

    If λv, λx and λm represent the wavelengths of visible light, x-rays and microwave respectively, then

  • Question 7
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  • Question 8
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  • Question 9
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    An electromagnetic wave in vacuum has the electric and magnetic fields E and B, which are always perpendicular to each other. The direction of polarisation is given by X and that of wave propagation by k. Then,

  • Question 10
    4 / -1

    Which of the following relations is correct ?

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