Q

For the same amount of work, the time taken by Machine A is one-half that of Machine B. What is the ratio of the power of Machine A to that of Machine B?

RRB Group D 18 Aug, 2026 (12:45 PM - 2:15 PM) 2026
✓ Answer: B 2 : 1
The correct choice is 2 : 1. It follows from the relevant Newtonian mechanics, motion, work, energy, power or simple-machine relationship.
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