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Electromagnetic waves are produced by...

Electromagnetic waves are produced by

A

A charge at rest

B

A moving charge

C

An accelerated charge

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
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Electromagnetic wave is produced by

A : High frequency electromagnetic waves are detected by some means based on physical effects they produce on interacting with matter. R : The oscillating fields of an electromagnetic wave can accelerate charges and can produce oscillating currents therefore, an apparatus designed to detect EM waves is based on this fact.

Knowledge Check

  • A charged particle oscillates about its mean equilibrium position with a frequency of 10^(9) Hz. The frequency of electromagnetic waves produced by the oscillator is

    A
    `10^(6)Hz`
    B
    `10^(7)Hz`
    C
    `10^(8)Hz`
    D
    `10^(9)Hz`

  • An electromagnetic wave can be produced, when charge is

    A
    moving with a constant velocity
    B
    moving in a circular orbit
    C
    falling in an electric field
    D
    both (b) and (c)

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    Electromagnetic wave cannot be produced by

    Assertion : gamma -rays are produced by the transition of a nucleus from some higher energy state to some lower energy state. Reason : Electromagnetic waves are always produced by the transition process.

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