REFRACTION AT A SPHERICAL SURFACE

Let us consider, LMN represents a ‘convex’ spherical surface of radius of curvature ‘R’ of refractive index ‘’. Consider a point object ‘O’ on the principal axis situated in an optically rarer medium of . . A ray ‘OA’ incident at an angle ‘i’ is refracted along ‘AI’. Another ray ‘OM’ incident normally on the […]

REFRACTION PRODUCED BY A PARALLEL SIDED SLAB

  When a ray of light travels from one medium to a second medium, refraction occurs at both the interface at point ‘B’ and then once again refraction take place at point ‘C’ from lower interface. By Snell’s law, (at point ‘B’)         ………………….(1) and (at point ‘C’) Or                         ………………….. (2) From (1) and (2) […]