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Important Questions: The second law of thermodynamics: reversible and irreversible processes for JEE

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Part of Thermodynamics in JEE Main Physics.

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Q1PhysicsUnit 8: Thermodynamics

Assertion In an ideal thermodynamically reversible process, the energy from work performed by or on the system would be maximized, and that from heat would be minimized. Reason A reversible process is a process whose direction can be "reversed" by inducing infinitesimal changes to some property of the system via its surroundings, while not increasing entropy.

Q2PhysicsUnit 8: Thermodynamics

Natural processes are:

Q3PhysicsUnit 8: Thermodynamics

From below which are the disadvantages of nuclear energy?

Q4PhysicsUnit 8: Thermodynamics

Assertion Reversible systems are difficult to find in real world. Reason Most processes are dissipative in nature.

Q5PhysicsUnit 8: Thermodynamics

A process is said to be reversible if:

Q6PhysicsUnit 8: Thermodynamics

Which of the process is the reversible process?

Q7PhysicsUnit 8: Thermodynamics

A reversible process changes the state of a system in such a way that the net change in the combined entropy of the system and its surroundings is :

Q8PhysicsUnit 8: Thermodynamics

A reversible engine takes heat from a reservoir at

527^{\circ} \mathrm{C}

and gives out heat to

a \sin k

127^{\circ}

C. How many Joules/s must it take from the reservoir to perform useful mechanical work at the rate of

750 W ?

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