Embibe Experts Solutions for Chapter: Ray Optics, Exercise 5: BEGINNER'S BOX - 5

There is a small air bubble inside a glass sphere ($\mu$ = 1.5) of radius 10 cm. The bubble is 4 cm below the surface and is viewed normally from the outside as shown in figure. Find the apparent depth of the bubble.

Calculate the resolving power of astronomical telescope, assuming the diameter of the objective lens to be $6 \mathrm{cm}$ and wavelength of light used to be $540 \mathrm{mm}$.

Calculate the limit of resolution of a microscope if an object of numerical aperture 0.12 is viewed by using light of wavelength 6 × 10^–7 m.