Question

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. ${10}^{9}Hz$
• C. ${10}^{8}Hz$
• D. ${10}^{7}Hz$

Answer 1

The correct option is B

${10}^{9}Hz$

Correct Option: Option B

1. Electromagnetic waves are produced by the simultaneous prorogation of electric and magnetic waves.
2. A moving charged particle produces both electric and magnetic fields which oscillate at the same frequency of the particle.
3. The oscillation of the charged particle is along the propagation of the electromagnetic waves.
4. Thus, the frequency of oscillating charged particle about its equilibrium position and frequency of the electromagnetic wave will be the same.
5. Hence, the frequency of the electromagnetic wave is ${10}^{9}Hz$.

Hence, the correct option is B.