A small sphere carrying a charge ‘$q$’ is hanging in between two parallel plates by a string of length $L$. Time period of pendulum is ${T_0}$. When parallel plates are charged, the time period changes to $T$. The ratio $T/{T_0}$ is equal to
A small sphere carrying a charge ‘$q$’ is hanging in between two parallel plates by a string of length $L$. Time period of pendulum is ${T_0}$. When parallel plates are charged, the time period changes to $T$. The ratio $T/{T_0}$ is equal to
- A
${\left( {\frac{{g + \frac{{qE}}{m}}}{g}} \right)^{1/2}}$
- B
${\left( {\frac{g}{{g + \frac{{qE}}{m}}}} \right)^{3/2}}$
- C
${\left( {\frac{g}{{g + \frac{{qE}}{m}}}} \right)^{1/2}}$
- D
None of these
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- [IIT 2001]