The figure shows an experimental plot for discharging of a capacitor in an $R-C$ circuit. The time constant $\tau$ of this circuit lies between
  • A $100\; sec$ and $150\; sec$
  • B $150\; sec$ and $200\; sec$
  • C $0\; sec$ and $50\; sec$
  • D $50\; sec$ and $100\; sec$
AIEEE 2012, Medium
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