Work, Power and EnergyHard
Question
An ideal heat engine working between temperature T1 and T2 has an efficiency η, the new effciency if both the source and sink temperature are doubled, will be :-
Options
A.η/2
B.η
C.2η
D.3η
Solution
In first case η1 = 
In second case η2 =
= η
In second case η2 =
Create a free account to view solution
View Solution FreeMore Work, Power and Energy Questions
Choose CORRECT statement(s) regarding the photoelectric effect :-...A bullet of mass 10g leaves a riffle at an initial velocity of 1000m/sec and strikes the earth at the same level with a ...A shell of mass m moving with velocity v suddenly breaks into 2 pieces. The part having mass remains stationary. The vel...A metal ball of mass 2kg moving with speed of 36km/hr is having a collision with a stationary ball of mass 3kg. If after...A ball of mass 1 kg is released from the tower of Pisa. The kinetic energy generated in it after falling through 10m wil...