The coefficient of performance of a Carnot refrigerator working between 30⁰C and 0⁰C is

The coefficient of performance of a Carnot refrigerator working between 30⁰C and 0⁰C is

Options

(a) 10
(b) 1
(c) 9
(d) zero

Correct Answer:

9

Explanation:

Coefficient of performance = K
.·. K = T₂ / (T₁-T₂) = 273 / (303-273) = 273 / 30 = 9.

admin:

Related Questions

  1. Consider the following two statements about Kirchhoff’s law
  2. If the pressure of gas is increased from 1.01×10⁵ Pa to 1.165×10⁵ Pa and volume
  3. A coin placed on a rotating turn table just slips,if it is placed at a distance
  4. If the half-life of a material is 10 yr, then in what time, it becomes 1/4th part
  5. A Zenor diode has a contact potential of 1 V in the absence of biasing. It undergoes