Ray Optics question bank (Physics)

A particle executes linear S.H.M. along the principal axis of a convex lens of focal length $8 \mathrm{~cm}$. The mean position of oscillation is at $14 \mathrm{~cm}$ from the lens with amplitude $1 \mathrm{~cm}$. The amplitude of oscillating image of the particle is nearly

Inside a vessel filled with liquid a converging lens is placed as shown in figure. The lens has focal length $15 \mathrm{~cm}$ when in air and has refractive index $\frac{3}{2}$. If the liquid has refractive index $\frac{9}{5}$, the focal length of lens in liquid is