Question

A body rotates at $300$ rotation per minute. The value in radian of the angle described in $1$ sec is

• A. $5$
• B. $5\pi$
• C. $10$
• D. $10\pi$

Answer 1

The correct option is D $10\pi$

Given,

$\omega =300rev/min$

i.e, In $1min,300\times 2\pi =600\pi rad$

In $1sec=\frac{600\pi }{60}=10\pi rad$

Hence the answer is $10\pi rad$

Option $\text{D}$ is the correct answer