(a) Distinguish between free and damped oscillations. Set up a differ…
Previous year question for Applied Engineering Physics.
Question
(a) Distinguish between free and damped oscillations. Set up a differential equation of motion for damped harmonic oscillator. Deduce general expression for displacement of oscillator.
(b) In a ruby laser, total number of $\text{Cr} + 3$ ions in excited state are $2.8 \times 10^9$. If the laser emits radiation of wavelength of $7000\text{A}^\circ$, calculate the energy of laser pulse.
- Year: 2014
- Subject: Applied Engineering Physics