Prism refractive index (minimum deviation) (μ = sin((A+δm)/2)/sin(A/2))
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μ = sin((A+δm)/2)/sin(A/2)
What each symbol means
| Symbol | What it stands for |
|---|---|
| A | Angle of prism (apex angle) (deg or rad, consistent) |
| \mu | Refractive index of prism material (w.r.t. surrounding medium) |
| \delta_m | Angle of minimum deviation (same angular units as A) |
When to use this
Standard JEE / NCERT assumptions unless stated (paraxial, thin lens, coherent YDSE sources, etc.).