A) \[ev/g\]
B) \[{{e}^{2}}v/g\]
C) \[{{e}^{2}}\sqrt{\left( \frac{8h}{g} \right)}\]
D) \[{{e}^{2}}\sqrt{\left( \frac{h}{g} \right)}\]
E) \[{{e}^{2}}\sqrt{\left( \frac{2h}{g} \right)}\]
Correct Answer: C
Solution :
\[t=\sqrt{\left( \frac{2h}{g} \right)}\] ?.. (1) The second impact occurs after an additional time \[=2\sqrt{2{{h}_{1}}g}=2e\sqrt{\frac{2h}{g}}\] \[\therefore \]The third impact occurs after an additional time \[=2\sqrt{2{{h}_{2}}g}\] \[=2{{e}^{2}}\sqrt{\frac{2h}{g}}\] \[={{e}^{2}}\sqrt{\frac{8h}{g}}\]
You need to login to perform this action.
You will be redirected in
3 sec
