First slide

Heat given

Question

Ideal monoatomic gas is taken through a process dQ = 2dU. The molar heat capacity for the process is
(where, dQ is heat supplied and dU is change in internal energy)

Easy

A

2.4 R
B

3R
C

R
D

2R

Solution

$Δ Q = 2 \cdot Δ U$ (Given)
$∴ n C \cdot Δ T = 2 (n C_{V} Δ T) or C = 2 C_{V} = 2 \times \frac{3}{2} R = 3 R$

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