Teaching Bihar STET Paper 1 (माध्यमिक) Mock Test 2024 General Science Physics Work Power Energy

An old man does 1000 J of work in 50 s and a young boy does 2000 J of work in 80 s. The ratio of the power delivered by the old man to that by the young boy is

1
5 ∶ 2
2
5 ∶ 4
3
4 ∶ 5
4
2 ∶ 5
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