| ⇦ | 
| ⇨ |
An engine has an efficiency of 1/6. When the temperature of sink is reduced by 62⁰C, its efficiency is doubled. Temperature of the source is
Options
(a) 37⁰C
(b) 62⁰C
(c) 99⁰C
(d) 124⁰C
Correct Answer:
99⁰C
Explanation:
Since efficiency of engine is ? = 1 – T₂ / T₁
According to the problem, 1/6 = 1 – T₂ / T₁ ……(1)
When the temperature of the sink is reudced by 62⁰C, its efficiency is doubled
2 (1/6) = 1 – T₂ – 62 / T₁ ……..(2)Solving (1) and (2) T₂ = 372 K
T₁ = 99⁰C = Temperature of source.
Related Questions: - Zenor breakdown in a semiconductor diode occurs when
- A solid which is transparent to visible light and whose conductivity increases
- A body of mass 0.5 kg travels in a straight line with velocity v=a x³/², where
- The voltage of clouds is 4×10⁶ volt with respect to ground. In a lightening
- The conductivity in the intrinsic semiconductor does not depend on
Topics: Thermodynamics
(179)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Zenor breakdown in a semiconductor diode occurs when
- A solid which is transparent to visible light and whose conductivity increases
- A body of mass 0.5 kg travels in a straight line with velocity v=a x³/², where
- The voltage of clouds is 4×10⁶ volt with respect to ground. In a lightening
- The conductivity in the intrinsic semiconductor does not depend on
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