A) \[2p\,tan\,\theta \]
B) \[2p\,sin\,\theta \]
C) \[2p\,cos\,\theta \]
D) \[~2p\]
Correct Answer: B
Solution :
\[\left| ({{P}_{f}}-{{P}_{i}}) \right|=\]Change in momentum \[=\sqrt{{{P}^{2}}+{{P}^{2}}+2P.P\,cos\,(\pi -2\theta )}\] \[=P\sqrt{2+2(-cos\theta )}\] \[=P\sqrt{2(si{{n}^{2}}\theta )}\] \[=2P\,\sin \theta \]You need to login to perform this action.
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