COMEDK · Physics · 6. Work Power Energy
If \(120 \mathrm{~J}\) of work is done in \(2 \mathrm{~min}\) by a water pump, then the power of the pump is
- A \(14.4 \mathrm{~kW}\)
- B \(240 \mathrm{~W}\)
- C \(60 \mathrm{~W}\)
- D \(1 \mathrm{~W}\)
Answer & Solution
Correct Answer
(D) \(1 \mathrm{~W}\)
Step-by-step Solution
Detailed explanation
Given, work done, \(W=120 \mathrm{~J}\) Time, \(t=2 \mathrm{~min}=2 \times 60=120 \mathrm{~s}\) \(\therefore\) Power \(=\frac{\text { Work done }}{\text { Time }}=\frac{W}{t}=\frac{120}{120}=1 \mathrm{~W}\)
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