| ⇦ | 
| ⇨ |
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: - If the pressure of gas is increased from 1.01×10⁵ Pa to 1.165×10⁵ Pa and volume
- After 300 days, the activity of a radioactive sample is 5000 dps
- If 20% of a radiactive element decays in 10 days, then amount of original material left
- The respective speeds of the molecules are 1,2,3,4 and 5 km/s.
- The depth at which the effective value of acceleration due to gravity is g/4
Topics: Thermodynamics
(179)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- If the pressure of gas is increased from 1.01×10⁵ Pa to 1.165×10⁵ Pa and volume
- After 300 days, the activity of a radioactive sample is 5000 dps
- If 20% of a radiactive element decays in 10 days, then amount of original material left
- The respective speeds of the molecules are 1,2,3,4 and 5 km/s.
- The depth at which the effective value of acceleration due to gravity is g/4
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
Leave a Reply