AIIMS 2019 Physics FM and AM Broadcasting Assertion Reason Question
Assertion : FM broadcast is better than AM broadcast.
Reason : Noise change is maximum in amplitude of AM waves.
Both assertion and reason are true and reason is the correct explanation of assertion.
Both assertion and reason are true but reason is not the correct explanation of assertion.
Assertion is true but reason is false.
Both assertion and reason are false.
Correct Answer
Detailed Explanation
FM (Frequency Modulation) broadcast is superior to AM (Amplitude Modulation) broadcast primarily because FM signals are less susceptible to noise and interference, which predominantly affects the amplitude of AM waves. The assertion highlights this advantage, while the reason correctly identifies that in AM broadcasting, noise can distort the main signal by altering its amplitude, thus confirming the assertion.
Option B is incorrect because, although both statements are true, the reason does indeed provide a correct explanation for the assertion. Options C and D are incorrect as they misrepresent the truth of both the assertion and reason.
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