A) \[W\text{ }m\text{ }{{K}^{1}}\]
B) \[~W\text{ }{{m}^{1}}\text{ }{{K}^{1}}\]
C) \[J\text{ }m\text{ }{{K}^{b\text{ }1}}\]
D) \[J\text{ }{{m}^{1}}\text{ }{{K}^{1}}\]
Correct Answer: B
Solution :
\[H=\frac{kA}{\ell }({{\theta }_{1}}-{{\theta }_{2}})\] \[k=\frac{H\ell }{A\theta }\] \[=\frac{W.m}{{{m}^{2}}K}\] \[=W{{m}^{1}}{{K}^{1}}\]
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