1.

(i) A person is tuning his radio set ta particular station What is the person trying to do to tune it? (ii) Name the phenomenon involved in tuning the radio set.(iii) Define the phenomenon named by you in part (ii).

Answer»

(i) The person is trying to change the values of the electronic components to produce vibrations of frequency equal to that of the incoming radio waves which he wants to receive. 

(ii) The phenomenon involved in tuning the radio set is resonance

(iii) Resonance : When the frequency of the externally  applied periodic force is equal to the natural frequency of the body, the body starts vibrating large amplitude, producing a loud sound.



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