Question

A steam engine delivers 5.6×10^8 j of work per min by taking 3.6×10^9 j of heat from it's sources calculate efficiency of engine

Answer 1

Here,W=5.6×10^8J,Q=3.6×10^9J
So, efficiency=W/Q
=5.6×10^8/3.6×10^9
=56/36×10
=0.156
=15.6%