$A$ ball is of mass $m$, strikes a smooth ground at angle $\alpha$ as shown in figure and is deflected at angle $\beta$. The coefficient of restitution will be
$A$ ball is of mass $m$, strikes a smooth ground at angle $\alpha$ as shown in figure and is deflected at angle $\beta$. The coefficient of restitution will be
- A
$tan \alpha /tan \beta$
- B
$cos \alpha /cos \beta$
- C
$sin \alpha /sin \beta$
- D
$tan \beta /tan \alpha$
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