Question

Assertion : Wave speed is given by v = fλ. If frequency f is doubled, v will become two times.

Reason : For given conditions of medium wave speed remains constant.

(a) If both Assertion and Reason are true and the Reason is correct explanation of the Assertion 

(b) If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.

(c) If Assertion is true, but the Reason is false.

(d) If Assertion is false but the Reason is true.

Answer 1

Correct option (d) If Assertion is false but the Reason is true.

Explanation :

v = fλ is constant for a particular medium so if frequency is doubled wave length be comes half, and speed remains constant. Thus assertion is false.