Question

What are the Factors that affect lateral displacement of a glass slab ?

Answer 1

The lateral displacement of light occurs because of the Refraction of light. The Wavelength of the light used (colour) : Violet light refracts more than red light. The Material used and its refractive index : The higher the Refractive Index, the more the light bends. The thickness of the slab of refractive material.

Answer 2

The factors that affect the lateral displacement are as follows :-

(i) Lateral displacement is directly proportional to the thickness of the glass slab.

(ii) Lateral displacement is directly proportional to the angle of incidence .

(iii) Lateral displacement is directly proportional to the refractive index of the medium .

$\huge{\texttt{Explanation:}}$

◼ The lateral displacement is nothing but the shift in the incident ray and the emergent ray .

◼ The lateral displacement will be more if the thickness of the glass slab is more . This is solely because the ray have to travel more distance and hence will experience more refraction.

◼ The lateral displacement is more if angle of incidence is more because the angle of incidence is equal to the angle of emergence .

◼ The refractive index is the ratio of the speed of the light in vacuum to the speed of the light in that medium .

◼ If refractive index is more , this means that the optical density of the medium is less and light will travel very slowly through it .

◼ This also implies that the ray will suffer more deviation and there will be more lateral shift .