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. Which one of the following statements is true, if half-life of a radioactive substance
  2. A block of mass M is attached to the lower end of a vertical spring
  3. Monochromatic radiation emitted when electron on hydrogen atom
  4. The resistance of an ammeter is 13Ω and its scale is graduated for a current
  5. Which two of the following five physical parameters have the same dimensions?