# Angular momentum of the particle rotating with a central force is constant due to

a) constant force b) constant force is constant c) zero torque d) constant torque

When a body rotating with central force, the torque due to the force is zero.
$\overrightarrow{ \tau} = \overrightarrow{ r} \times \overrightarrow{ F}$ $\; \; \; (\because \overrightarrow{r} = 0)$
$\overrightarrow{\tau} = 0$
(c) option is correct.
edited Feb 28