Time period of a simple pendulum is $T$ inside a lift when the lift is stationary. If the lift moves upwards with an acceleration $g / 2,$ the time period of pendulum will be
  • A$\sqrt{3} T$
  • B$\frac{ T }{\sqrt{3}}$
  • C$\sqrt{\frac{3}{2}} T$
  • D$\sqrt{\frac{2}{3}} T$
JEE MAIN 2021, Medium
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