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BITSAT2010PhysicsThermodynamicsActual

An ideal refrigerator has a freezer at a temperature of 13^ C . The coefficient of performance of the engine is 5 . The temperature of the air (to which heat is rejected) is

Options

  1. A320^ C
  2. B39^ C
  3. C325 ~K
  4. D325^ C

Correct answer

B. 39^ C

Step-by-step solution

T ₂=273-13=260 , K = T ₂ ~T ₁- T ₂ ; 5= 260 ~T ₁-260 or T ₁-260=52 ; T ₁=312 ~K T ₂=312-273=39^ C

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