A) 6.56 joules
B) \[8.32\times {{10}^{2}}\]joules
C) \[12.48\times {{10}^{2}}\]joules
D) 20.80 joules
Correct Answer: C
Solution :
Change in internal energy is always equal to the heat supplied at constant volume. i.e. \[\Delta U={{(\Delta Q)}_{V}}=\mu {{C}_{V}}\Delta T.\] For monoatomic gas \[{{C}_{V}}=\frac{3}{2}R\] Þ \[\Delta U=\mu \,\left( \frac{3}{2}R \right)\Delta T=1\times \frac{3}{2}\times 8.31\times (100-0)\] \[=12.48\times {{10}^{2}}J\]
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