10. A quarter cylinder of radius R, µ1 = 1.5 is placed on the table. A point object P is kept at a distance 'mR' from it, find the value of 'm' for which a ray from 'P' will emerge parallel to...

SILVERING OF LENS: Lens with silvered surface acts as a mirror. We can calculate the focal length of surface using P = P1 only modificaion is that power of mirror is given by Pmirror = ...

Types of lenses: Lenses are of following type: Definition: • OPTICAL CENTRE: Optical centre is a point for a given lens through which any ray passes undeviated. •...

FEW IMPORTANT TERMS: • Grazing Incident: When i = 900, in this angle of refraction becomes equal to critical angle. • Grazing Emergence: When e = 900, here   r2 = Critical...

If there exists a region of index through which ray has to pass; such that there exists a medium of same refractive index on the entry and exit of the ray then the ray gets laterally shifted by...

RULES FOR IMAGE FORMATION: (i) A ray parallel to principal axis passes (or appear to pass) through focus after reflection. (ii) A ray passing through or directed towards focus after...

Introduction OPTICS is study of propagation of light. In Geometric optics we are just concerned about, what the path of light is when it gets reflected or refracted. While dealing with Geometric...