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प्रश्न
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 2 × 109 Hz.
- will have a wavelength of 0.3 m.
- fall in the region of radiowaves.
विकल्प
a, b and c
a, c and d
b, c and d
b and d
उत्तर
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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