$m x^{2}-b x+k=0$

Find time after which to the energy will become half of initial maximum value in damped force oscillation.

  • A$t=\frac{m}{b}+\frac{1}{2} \ln 2$
  • B$t=\frac{m}{b} \times \frac{2}{3} \ln 2$
  • C$t=\frac{m}{b}-\frac{1}{2} \ln 2$
  • D$t=\frac{m}{b} \times \frac{1}{2} \ln 2$
AIIMS 2019, Diffcult
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