Assertion: When a source of sound passes us, whether it be a car horn or a train whistle, the pi....

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Assertion: When a source of sound passes us, whether it be a car horn or a train whistle, the pitch we hear goes from high to low.
Reason: According to Doppler's effect, there is apparent change in the frequency of sound observed due to relative motion between the observer and the source of sound.
(1) Assertion is True, Reason is True; Reason is correct explanation for Assertion
(2) Assertion is True, Reason is True; Reason is not correct explanation for Assertion
(3) Assertion is True, Reason is False
(4) If both Assertion and Reason are False


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