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.

Related Questions:

1. Which is incorrect about thermal process
2. A 1Ω resistance in series with an ammeter is balanced by 75 cm of potentiometer wire
3. During production of cathode ray
4. Dimensions [ML⁻¹T⁻¹] are related with
5. An electron in a circular orbit of radius 0.05 nm performs 10¹⁶ rev/s. The magnetic

Topics: Thermodynamics (179)
Subject: Physics (2479)

---

Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score

18000+ students are using NEETLab to improve their score. What about you?

Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.

---

Share this page with your friends