Assertion : The periodic time of hard spring is less its compared to that of soft spring
Reason: The periodic time depend upon the spring constant

Options

A. If both assertion and reason are true and the reasopn is a true explanation of the assertion
B. If both assertion and reason are true and but the reason is not the correct explanation of assertion
C. If the assertion is true but reason is false
D. If both the assertion and reason are false

Answer

A

Explanation

The time period of a oscillation spring is given by `T = 2pi sqrt((m)/(k)) rArr T prop (1)/(sqrt(k)) `since the spring constant is large for hard spring therefore hard spring has a less periodic time as compared to soft spring