A charged particle oscillates about its mean equilibrium position with a frequency of 109 Hz. The electromagnetic waves produced ______. will have frequency of 109 Hz. will have frequency of - Physics

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A charged particle oscillates about its mean equilibrium position with a frequency of 109 Hz. The electromagnetic waves produced ______.

  1. will have frequency of 109 Hz.
  2. will have frequency of 2 × 109 Hz.
  3. will have a wavelength of 0.3 m.
  4. fall in the region of radiowaves.

Options

  • a, b and c

  • a, c and d

  • b, c and d

  • b and d

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Solution

a, c and d

Explanation:

Here we are given the frequency by which the charged particles oscillates about its mean equilibrium position, it is equal to 109 Hz. The frequency of electromagnetic waves produced by a charged particle is equal to the frequency by which it oscillates about its mean equilibrium position.

So, frequency of electromagnetic waves produced by the charged particle is v = 109 Hz.

Wavelength `λ = c/v = (3 xx 10^8)/10^9` = 0.3 m

The frequency of 109 Hz falls in the region of radiowaves.

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Chapter 8: Electromagnetic Waves - MCQ I [Page 50]

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NCERT Exemplar Physics Class 12
Chapter 8 Electromagnetic Waves
MCQ I | Q 8.11 | Page 50

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