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Electromagnetic...

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  • Question 1
    4 / -1

    Electromagnetic waves can be deflected by

  • Question 2
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    In an electromagnetic wave, direction of propagation is in the direction of

  • Question 3
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    Rank the following radiations according to their associated energies, greatest first.
    I. Yellow light from a sodium lamp.
    II. γ – rays emitted by a radioactive nucleus.
    III. Radio waves emitted by the antenna.
    IV. Microwaves beam emitted by radar.

  • Question 4
    4 / -1

    Which of the following is absorbed by the ozone layer?

  • Question 5
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    An electromagnetic radiation has an energy of 13.2 keV. Then, the radiation belongs to the region of

  • Question 6
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    The frequency 1057 MHz of radiation arising from two close energy levels in hydrogen belongs to

  • Question 7
    4 / -1

    All components of the electromagnetic spectrum in vacuum have the same

  • Question 8
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    The displacement current was first postulated by

  • Question 9
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    A plane electromagnetic wave is incident on a material surface. If the wave delivers momentum p and energy E, then

  • Question 10
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    An expression for the magnetic field strength B at the point between the capacitor plates indicates in Fig. Express B in terms of the rate of change of the electric field strength i.e. dE/dt between the plates

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