Is such an ideal heat engine possible, which receives 50 J from the heater and performs a useful

Is such an ideal heat engine possible, which receives 50 J from the heater and performs a useful work of 100 J per cycle? what is the efficiency of such a heat engine

Given:

Q1 = 50 J;

A = 100 J;

Efficiency -?

Decision:

formula for the efficiency of a heat engine:

Efficiency = A / Q1 * 100%;

Efficiency = 100/50 * 100% = 200%;

The maximum efficiency of the heat engine can be equal to 100%.

Consequently, the efficiency of such a heat engine is impossible.

Answer: impossible, 200%