Physics

Problem

A Carnot engine absorbs 1000 J of heat energy from a reservoir at

127^\circ\text{C}

and rejects 600 J of heat energy during each cycle. The efficiency of engine and temperature of sink will be: a. 20% and

-43^\circ\text{C}

b. 40% and

-33^\circ\text{C}

c. 50% and

-20^\circ\text{C}

d. 70% and

-10^\circ\text{C}