AIPMT | 2015Work, Power and EnergyEasy
Question
A Carnot engine, having an efficiency of 
as heat engine, is used as a refrigerator. If the work done on the system is 10 J, the amount of energy absorbed from the reservoir at lower temperature is :-
as heat engine, is used as a refrigerator. If the work done on the system is 10 J, the amount of energy absorbed from the reservoir at lower temperature is :-Options
A.99 J
B.90 J
C.1 J
D.100 J
Solution
For Engine & refrigerators operating between two same temperatures
⇒ β = 9
β =
(From the principle of refrigerator)
9 =
⇒Q2 = 90 Joule
Hence option (2)
⇒ β = 9β =
(From the principle of refrigerator)9 =
⇒Q2 = 90 JouleHence option (2)
Create a free account to view solution
View Solution FreeMore Work, Power and Energy Questions
A block of mass 2 kg is free to move along x-axis. It is at rest and from t = 0. Onwards it is subjected to a time depen...When a conservative force does positive work on a body, then...A block of mass 3kg is pulled up on a smooth incline of angle 37o with the horizontal. If the block moves with an accele...A body of mass 2 kg falls from a height of 20 m. What is the loss in potential energy :-...The energy required to accelerate a car from rest to 10 m/s is W. The energy required to accelerate the car from 10 m/s ...