A) \[h\]
B) \[\frac{h}{2}\]
C) \[3h\]
D) \[2h\]
Correct Answer: D
Solution :
Volume of ball\[=m/\rho \]Acceleration of the ball inside the liquid, \[a=\frac{{{F}_{net}}}{m}=\frac{upthrust-weight}{m}\] \[a=\frac{\left( \frac{m}{\rho } \right)(3\rho )g-mg}{m}=2g,\]upwards Velocity of the ball on reaching the surface, \[v=\sqrt{2ah}=\sqrt{4gh}\] The ball will jump to a height \[H=\frac{{{v}^{2}}}{2g}=\frac{4gh}{2g}=2h\]You need to login to perform this action.
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