How to calculate sin law?
GeneralClass 12AllAnswered 27 Mar 2026
Answer
To apply the sine law (Snell's law) in calculations:
- Identify the two media and their refractive indices (n₁ and n₂)
- Measure or identify the angle of incidence (θ₁)
- Apply the formula: n₁ sin θ₁ = n₂ sin θ₂
- Rearrange to find the unknown: sin θ₂ = (n₁ sin θ₁)/n₂
- Calculate θ₂ = arcsin[(n₁ sin θ₁)/n₂]
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