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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)? |
0° 30° 45° 90° |
0° |
The correct answer is Option (1) → 0° According to snell's law - $μ_1\sin i=μ_2\sin r$ [Angle of incident = 0°] $μ_1\sin 0=μ_2\sin r⇒\sin r=0⇒r=0°$ |
