A) \[4\mathbf{\hat{j}}-4\mathbf{\hat{i}}+\alpha \mathbf{\hat{k}}\]
B) \[-1\]
C) \[\frac{1}{2}\]
D) None of these
Correct Answer: A
Solution :
Torque \[P=\left( \frac{\mu RT}{V-\mu b} \right)-\frac{{{\mu }^{2}}a}{{{V}^{2}}}\] \[P=\left( \frac{RT}{2V-b}-\frac{a}{4{{b}^{2}}} \right)\] or \[\mu =\frac{1}{2}\] \[\mu =\frac{m}{M}\] \[\Rightarrow \] \[m=\mu M=\frac{1}{2}\times 44=22g\] \[n=\frac{1}{2\pi }\sqrt{\frac{g}{l}}\]
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