A machine rated as 150W, changes the velocity of a 10kg mass from 4 ms^(-1)to 10ms^(-1)in 4s. The efficiency of the machine nearly is

A machine rated as 150W, changes the velocity of a 10kg mass from 4 ms

1.	A machine rated as 150W, changes the velocity of a 10kg mass from 4 ms^(-1)to 10ms^(-1)in 4s. The efficiency of the machine nearly is
Answer» 0.7 0.3 0.5 0.4 Answer :A