JEE PHYSICS MCQ: THERMODYNAMICS

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Even Carnot engine cannot give 100% efficiency because we cannot

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Correct option: C

Reach absolute zero temperature

Option C (Reach absolute zero temperature) is correct because achieving 100% efficiency in a Carnot engine requires the cold reservoir to be at absolute zero, which is impossible.

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The work done in which of the following process is zero? Water is used to cool the radiators of engines in cars because A gas expand

0.25\,\,{m^3}

at constant pressure

{10^3}N/{m^2},

the work done is A thermodynamic process in which temperature

T

of the system remains constant though other variable

P

and

V

may change, is called What is the slope for an isothermal process? For adiabatic processes

\left( {\gamma = \frac{{{C_p}}}{{{C_v}}}} \right)