Question

The fundamental period of the function $y=\sin x$ is

• A. $\pi$
• B. $2\pi$
• C. $\frac{\pi }{2}$

Answer 1

The correct option is B $2\pi$

We have the function $y=\sin x$
Fundamental period of a function is an interval for which the function repeats it's value.

For the graph of $y=\sin x$ the function gets repeated for every $2\pi$ interval.
Hence, the fundamental period of $y=\sin x$ is $2\pi$.