A) \[45{}^\circ \]
B) \[\theta ={{\tan }^{-1}}(4)\]
C) \[\theta ={{\tan }^{-1}}(0.25)\]
D) none of the above
Correct Answer: B
Solution :
Horizontal range = Maximum height ie, \[\frac{{{u}^{2}}\sin 2\theta }{g}=\frac{{{u}^{2}}{{\sin }^{2}}\theta }{2g}\] or \[2\sin \theta \cos \theta =\frac{{{\sin }^{2}}\theta }{2}\] or \[\tan \theta =4\] or \[\theta ={{\tan }^{-1}}(4)\]
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