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Physics Test 89...

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  • Question 1
    4 / -1

    In series LCR circuit, at resonance, quality factor is high which doesn't means

  • Question 2
    4 / -1

    Which of the following represent reactance of LC circuit?

  • Question 3
    4 / -1

    The inductance of a motor of a fan is 0.1 H. It is connected with AC source of 50 Hz. To get the maximum value of power from it, a capacitor is connected in series. Find the value of capacitor.

  • Question 4
    4 / -1

    In AC circuit XL = 4 Ω, XC = 12 Ω & R = 6 Ω and ac voltage is 100 V, 50 Hz. Then power loss is :

  • Question 5
    4 / -1

    In AC circuit, E = 220 sin (314 t) volt and i = 2 sin  . Then power through AC circuit is :-

  • Question 6
    4 / -1

    If surface absorbs the radiation completely then radiation pressure is given by:

  • Question 7
    4 / -1

    Which of the following is not the application infra-red waves:

  • Question 8
    4 / -1

    Electric and magnetic field of an electromagnetic wave:

  • Question 9
    4 / -1

    In electromagnetic wave magnetic vector at any instant is in (+y) direction, and electric field (–z) direction then polarization of the wave in:

  • Question 10
    4 / -1

    UV rays coming from the sun are:

    (a) absorbed by water in atmosphere

    (b) absorbed by ozone layer

    (c) transmitted by water vapour

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