For path `ArarrB` optical path is

What is optical path?

Geometrical path | Optical Path

Obtain the equation for optical path of a medium of thickness d and refractive index n.

Path followed by two rays through a thin lens in air is shown in the following figure. (Assume value of mu of lens same for both rays.) Optical path followed for two rays from A to B is

Young's double-slit experiment is conducted in water (mu_(1)) as shown in figure and a glass plate of thickness t and refractive index mu_(2) is placed in the path of S_(2) . Find the magnitude of the optical path difference at 'O'.

When a transparent parallel plate of uniform thickness t and refractive index mu is interposed normally in the path of a beam of light, the optical path is

When a transparent parallel plate of uniform thickness t and refractive index mu is interposed normally in the path of a beam of light, the optical path is

What is the importance of optical path ?