Question

Natural frequency of simple pendulum depends upon:

• A. its mass
• B. its length
• C. square of its length
• D. square root of inverse of its length

Answer 1

The correct option is D square root of inverse of its length

Natural frequency of the second pendulum $\nu =\frac{1}{2\pi }\sqrt{\frac{g}{l}}$
$⟹\nu =\sqrt{\frac{1}{l}}$
Thus natural frequency of second pendulum depends upon the square root of inverse of its length.