When the glancing angle of incidence of light on a material is 30°, the reflected and refracted light are found to be perpendicular. The refractive index of material is

Question

When the glancing angle of incidence of light on a material is 30°, the reflected and refracted light are found to be perpendicular. The refractive index of material is (A) 1.73 (B) 0.50 (C) 2.35 (D) 1.33

Tardigrade Admin · Accepted Answer

n = tan zp = tan (90° - 30°) = tan 60° = 1.732

Q. When the glancing angle of incidence of light on a material is 30 $^{\circ}$ , the reflected and refracted light are found to be perpendicular. The refractive index of material is

1.73

0.50

2.35

1.33

n = tan $z_{p} = t an (9 0^{\circ} - 3 0^{\circ}) = t an 6 0^{\circ} = 1.732$

Q. When the glancing angle of incidence of light on a material is 30∘, the reflected and refracted light are found to be perpendicular. The refractive index of material is