A) \[\theta ={{\tan }^{-1}}\mu \]
B) \[\theta ={{\tan }^{-1}}\frac{1}{\mu }\]
C) \[\theta ={{\tan }^{-1}}\frac{m}{\mu }\]
D) \[\theta ={{\tan }^{-1}}\frac{\mu }{m}\]
Correct Answer: B
Solution :
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