Question

Calculate the value of the angle of incidence when a ray of light incident on one face of an equilateral glass prism produces the emergent ray, which just grazes along the adjacent face. Refractive index of the prism is root2

Answer 1

Just gazes along means the angle of emergence = 90°

Answer 2

45°

Explanation:

n1=1;

n2=√2

The normal border between both the two materials, the refracted, and the incident ray, lies on same plane, according to Snell's laws. The ray of hope is travelling from the first medium to the second, and the formula is 1 ×u1 = (Sin i/Sin r). The incident ray, the refracted, and the normal to the interface between two media at the moment of incidence all lie on same plane when a beam of light traverses two media.