Question

The efficiency of heat engine is $\frac 16$, its efficiency is doubled when the temperature of sink decreases by 62°C, its efficiency doubles. Then what is the temperature of source?

• A. 372 K
• B. 470 K
• C. 542 K
• D. 1042 K

Answer 1

Answer: (A)

372 K

Answer 2

The correct option is (A): 372 K.