Q

A worker performs a task. Which of the following statements about power are correct? 1. If work remains constant and time increases, power decreases. 2. If time remains constant and work increases, power increases. 3. Power is directly proportional to work done. 4. Power is inversely proportional to time taken.

RRB Group D 13 Aug, 2026 (4:30 PM - 6:00 PM) 2026
✓ Answer: C 1, 2, 3 and 4
The correct choice is 1, 2, 3 and 4. It follows from the relevant Newtonian mechanics, motion, work, energy, power or simple-machine relationship.
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