On tripling the absolute temperature of the source, the efficiency of a Carnot's heat engine becomes double…

On tripling the absolute temperature of the source, the efficiency of a Carnot's heat engine becomes double that of the initial efficiency. Then the initial efficiency of the engine is _________ .
  1. $20 \%$
  2. $50 \%$
  3. $60 \%$
  4. $40 \%$

Solution

No solution. Refer to answer key.

Asked in: AP EAMCET 2017 (26 Apr Shift 2)

Practice more Thermodynamics questions on Aicharya