Time difference during sunrise and sunset: Sun is visible to an observer after the actual sunset because of refraction of light due to denser atmosphere near the earth. The apparent shift in the direction of sun is about 0.50 leading to delay of 2 minute in actual and apparent sun set. Time taken for 3600 […]
Refraction Class – XII Part – 3 Read More »
Refraction through a glass slab: Let us consider a rectangular glass slab of refractive index µ and thickness t placed in air. A ray of light AB incident at B with angle of incidence i. After refraction, the ray of light bends towards the normal and goes along BC such that r is the angle
Refraction Class – XII Part – 2 Read More »
Refraction through plane surface: Laws of refraction: 1st law – The incident ray, the refracted ray, and the normal to the interface at the point of incidence, all lie on the same plane, called the plane of incidence. 2nd law – The ratio of the sine of angle of incidence (i) to the sine of
Refraction Class – XII Part – 1 Read More »
