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NEET Physics Thermodynamics Questions Solved

An ideal gas is expanded adiabatically at an initial temperature of 300 K so that its volume is doubled. The final temperature of the hydrogen gas is (γ = 1.40) [Given : $2^{0.4} = 1.3$ ]

(1) 227.36 K

(2) 500.30 K

(3) 454.76 K

(4) –47°C

#Types of processes

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(1) $T V^{γ - 1} =$ constant ⇒ $\frac{T_{2}}{T_{1}} = {(\frac{V_{1}}{V_{2}})}^{γ - 1}$

$\Rightarrow T_{2} = 300 {(\frac{1}{2})}^{0 .4} = 227 .36 K$

Difficulty Level:

(1)
44%
(2)
14%
(3)
27%
(4)
16%

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