Q 11-13-033NEETJEE MainEasy
In damped oscillations of a lightly damped oscillator, which quantity decreases exponentially with time?
Answer: (C) amplitude
Concept. Light damping: $x = A_0e^{-bt/2m}\cos(\omega't + \phi)$.
Step 1. Identify. The amplitude factor $A_0e^{-bt/2m}$ decays exponentially; the frequency stays almost constant.
Answer. Amplitude (Option C).
Solution by Sreeraj P, M.Sc Physics