AP EAPCET 23-Aug-2021 Shift 1 Paper

As we know that,
Torque is the moment of force
and torque (τ)=r×F
where, r is distance between axis of rotation and force (F) .
Also, τ=

dL

dt

and since, in space there is no external torque is applied so, τ=0
∴ΔL=0=constant
Hence, Assertion (A) and Reason (R) both are true and Reason (R) is the correct explanation of Assertion (A).