When the bob of a simple pendulum swings, the work done by tension in the string is?

Q. A simple pendulum with a bob of mass m swings with an angular amplitude of ${40}^0$. When its angular displacement is ${20}^0$, the tension in the string greater than $mgcos{20}^0$.

Q. A simple pendulum with a bob of mass 'm' swings with angular amplitude of 6060, the tension in the string would be:

Q. Assertion (A): The work done by the tension in the string of a simple pendulum in one complete oscillation is zero
Reason (R): No work is done by the tension in the string since tension is always at right angles to the motion of bob.

Q. A simple pendulum with a bob of mass m swings with an angular amplitude of ${60}^{\circ }$, when its angular displacement is ${30}^{\circ }$, what is the tension of string?

Q. In a simple pendulum, work done by tension is non zero.