Aman 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

Aman of mass 60kg lifts a 15 kg mass to the top of a building of heigh

1.	Aman 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
Answer» 0.1 0.2 0.3 0.4 Answer :B