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Consider the given temperature entropy diagram. Which of the following processes represent increase in volume ?

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Important Questions on Thermodynamics

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Beta Question Bank for Medical: Physics>Chapter 17 - Thermodynamics>Exercise (Previous Year Questions)>Q 55

An ideal gas undergoes a cyclic process as shown in diagram. The net work done by the gas in the cycle is:-

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Beta Question Bank for Medical: Physics>Chapter 17 - Thermodynamics>Exercise (Previous Year Questions)>Q 56
A thermodynamic system does 60 J of useful work. If its internal energy decreases by 50 J, then how much heat has been supplied to the system?
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Beta Question Bank for Medical: Physics>Chapter 17 - Thermodynamics>Exercise (Previous Year Questions)>Q 57
In an adiabatic expansion of 0.5 mole of an ideal diatomic gas, temperature changes from 32ºC to 20ºC. The change in internal energy of the gas is 
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Beta Question Bank for Medical: Physics>Chapter 17 - Thermodynamics>Exercise (Previous Year Questions)>Q 58
A refrigerator having coefficient of performance 10 absorbs 500 J per cycle. The amount of heat rejected to the surrounding per cycle is:-
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Beta Question Bank for Medical: Physics>Chapter 17 - Thermodynamics>Exercise (Previous Year Questions)>Q 59
The change in entropy of 1 kg of nitrogen gas in an isobaric process when its temperature changes from 400 K to 800 K is 
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Beta Question Bank for Medical: Physics>Chapter 17 - Thermodynamics>Exercise (Analytical Questions)>Q 1

The following are the P-V diagrams for cyclic processes for a gas. In which of these processes heat is released by the gas ?

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Beta Question Bank for Medical: Physics>Chapter 17 - Thermodynamics>Exercise (Analytical Questions)>Q 2
A gas mixture contains 1 g H2 and 1 g He. If the temperature of gas mixture is increased from 0 °C to 100 °C at isobaric process then find given heat of gas mixture: γHe=53; γH2=75; R=2 cal mol-1 K-1
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Beta Question Bank for Medical: Physics>Chapter 17 - Thermodynamics>Exercise (Analytical Questions)>Q 3
An ideal gas expands isothermally form a volume V1 to V2 and then compressed to original volume V1 adiabatically. The initial pressure is, P1 and the final pressure is, P3. The total work done is, W. Then