1.

Assertion : There is an apparent change in frequency whenever there is a relative motion between a source & listener. Reason : SONAR & RADAR works under the principle Doppler effect.

Answer»

Both assertion and reason are TRUE and reason is 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

Solution :Both assertion and reason are true but reason is not the correct explanation of assertion.


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