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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoCyclic processMedium2 minQB

PhysicsMediumsingle choice

Passage / Comprehension

One mole of ideal monatomic gas follows the cycle ABC in the accompanying source graph of temperature against pressure. On AB, PT is constant. The universal gas constant is R.

Work done on gas in process AB is :-

Options:

Answer:

Solution:

$PT = K, K = P_{A} T_{A} = 300 P_{0}$
$P V = RT \Rightarrow P = \frac{R K}{V}$
$V_{A} = \frac{300 R}{P _{0}}, V_{B} = \frac{150 R}{2 P _{0}} = \frac{75 R}{P _{0}}$
$W_{by} = \int_{V_{A}}^{V_{B}} P d V = 2 R K (V_{B} - V_{A})$
$W_{by} = 2 (150 R - 300 R) = - 300 R$
$W_{on} = - W_{by} = + 300 R$
Answer C.

Stream:JEESubject:PhysicsTopic:Heat & ThermoSubtopic:Cyclic process

⏱ 2mℹ️ Source: QB

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