List of top Physics Questions on Thermodynamics asked in Maharashtra Class XII

"If two systems are each in thermal equilibrium with a third system, they are also in thermal equilibrium with each other." This statement refers to :
State and prove Kirchhoff's law of heat radiation.
Which of the following materials belongs to diathermanous substance?
In a thermodynamic system, define -- (a) Mechanical equilibrium (b) Chemical equilibrium and (c) Thermal equilibrium
A gas of 0.5 mole at 300 K expands isothermally from an initial volume of 2.0 litre to a final volume of 6.0 litre. What is the work done by gas?
In a thermodynamic system, define -- (a) Mechanical equilibrium (b) Chemical equilibrium and (c) Thermal equilibrium
Calculate the energy radiated in one minute by a perfectly black body of surface area 200 cm\(^2\) when it is maintained at 127\(^{\circ}\)C.
What do you mean by a thermodynamic system?

Prove Mayer's relation: \( C_p - C_v = \frac{R}{J} \)

Explain the change in internal energy of a thermodynamic system (the gas) by heating it.
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What is meant by surroundings in thermodynamics?
In a cyclic process, if \( \Delta U \) = internal energy, \( W \) = work done, \( Q \) = Heat supplied, then: