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A man of mass 60kg lifts a 15 kg mass t...

A man of mass 60kg lifts a 15 kg mass to the top of a building of height 10 m in 5 minutes. H is efficiency is

A

`10%`

B

`20%`

C

`30%`

D

`40%`

Text Solution

Verified by Experts

The correct Answer is:
B
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AAKASH SERIES-WORK POWER ENERGY-EXERCISE - 2
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