Question

(i) Name the phenomenon involved in tuning a radio set to a particular station.

(ii) Define the phenomenon named by you in part (i) above.

Answer 1

(i) The phenomenon involved in tuning a radio set to a particular station is called "resonance'.

(ii) Definition of the above phenomenon:

1. Resonance is the phenomenon in which amplitude will rise due to impinging of two same frequency waves.
2. There are a number of 'radio stations', sending different frequencies; when we tune our radio by varying the capacitance in the radio circuit;
3. When the frequency of the radio circuit will equal to the frequency that comes from the radio station then ‘resonance’ will occur;
4. And the circuit will absorb more energy from this impinging frequency than other stations' frequencies.