Question

Assertion(A): Pressure has the dimensions of energy density Reason(R): energy density = energy/Volume = [ML-1T-2]= Pressure

Assertion: Torque is an axial vector. Reason: Force is a polar vector.

A: Torque on a body can be zero even if there is a net force on it. R: Torque and force on a body are always perpendicular.

A: A couple does not exert a net force even though it exerts a torque. R: Couple is a pair of two forces with equal magnitude but opposite directions acting simultaneously on a body in different lines of action.