When a ray of light is incident normally with an incident angle (i) on the surface of thin film. What will be the angle of refraction (r)?
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → 0°
According to snell's law -
$μ_1\sin i=μ_2\sin r$ [Angle of incident = 0°]
$μ_1\sin 0=μ_2\sin r⇒\sin r=0⇒r=0°$