6. A ray of light is incident at an angle of 35° on the surface of refractive index 1.35.

Calculate the angle of refraction

Answer:25.1

Explanation:

Angle of incidence=i=35°

Refractive index=n=1.35

Angle of refraction=r

n = (sini) / (sinr)

1.35 = (sin35) / (sinr)

Cross multiply

1.35 x sinr = sin35. Sin35=0.5736

1.35 x sinr=0.5736

1.35sinr=0.5736

Divide both sides by 1.35

(1.35sinr) / 1.35=0.5736/1.35

sinr = 0.4249

r=sin (inverse) (0.4249)

r=25.1

Angle of refraction = 25.1°