MCQ
The work done by all the forces (external and internal) on a system equals the change in:
- ATotal energy.
- BKinetic energy.
- CPotential energy.
- DNone of these.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
(Velocity of sound in air is $340\,ms ^{-1}$ )

