Lateral displacement Lab

Refraction occurs when the speed changes when the lights travels from one medium to another medium. If the light travels from a medium to a denser medium, the light slows down and consequently is refracted towards the normal.thus the distance by which the light has been displaced after its binding thru a glass slab is known as lateral displacement.

Lateral displacement depends upon-

thickness of glass slab angle of incidence refractive index of glass slab

1. Lateral displacement is directly proportional to the above three factors.2. It is inversely proportional to the wavelength of incident light.

Resistance Lab

Resistance is caused due to the collision of the moving free electrons in a conductor with the fixed positive ions in the metal when a potential difference is applied across the conductor. As the length increases, the number of collisions by the moving free electrons with the fixed positive ions increases as more number of fixed positive ions are present in an increased length of the conductor. As a result, resistance increases.