Question

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

Answer 1

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.