With the help of a labeled ray diagram show the formation of image of an object by a compound microscope.

52 Light of wavelength 500nm in air enters a glass plate of refractive index 1.5. find its wavelength in glass. 53 What is the consequence of making angle of incidence of light, at an interface, greater than the critical angle? 55 What is meant by refraction? 56 Express the refractive index of the medium.