207 questions asked across 16 exam years, newest first
A heat engine operates with the cold reservoir at temperature 324 K. The minimum temperature of the hot reservoir, if the heat engine takes 300 J heat from the hot reservoir and delivers 180 J heat to the cold reservoir per cycle, is ____________ K.
Answer: 540
The velocity of upper layer of water in a river is . Shearing stress between horizontal layers of water is . Depth of the river is . (Co-efficient of viscosity of water is )
Answer: 100
When a gas filled in a closed vessel is heated by raising the temperature by , its pressure increases by . The initial temperature of the gas is ____ .
Answer: 250
