A simple pendulum hanging from the ceiling of a stationary lift has a time period $T_1$. When the lift moves downward with constant velocity, the time period is $T_2$, then
  • A${T_2}$ is infinity
  • B${T_2} = {T_1}$
  • C${T_2} < {T_1}$
  • D${T_2} > {T_1}$
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