If an electron revolves in the circular path of radius `0.5A^(@)` at a frequency of `5xx10^(15)` cycles/sec. The equivalent electric current is

Answer

B

Explanation

Dring fall, `v = 0 + g t`
`KF = (1)/(2)mv^(2) = (1)/(2)m (g t)^(2)`
`KE prop t^(2)`, so graph is upward parabola.
During collision. KE will decrease in compression and increase in reformation.
Finally, During going up KE will decrease.