JEE PYQ: Thermal Properties Of Matter Question 13
Question 13 - 2019 (10 Apr 2019 Shift 2)
When heat Q is supplied to a diatomic gas of rigid molecules, at constant volume its temperature increases by $\emptyset T$. The heat required to produce the same change in temperature, at a constant pressure is:
(1) $\frac{2}{3}Q$
(2) $\frac{5}{3}Q$
(3) $\frac{7}{5}Q$
(4) $\frac{3}{2}Q$
Show Answer
Answer: (3)
Solution
$\frac{Q_1}{Q} = \frac{C_p}{C_v} = \gamma = \frac{7}{5}$, so $Q_1 = \frac{7}{5}Q$
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