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MHT CET 2026 (20 Apr, Shift 2) · Prism, Dispersion & Scattering

Prism, Dispersion & Scattering question from MHT CET 2026 (20 Apr, Shift 2)

Q3MHT CET 2026 · 20 APR · SHIFT 2Easy

Prism, Dispersion & Scattering

A thin glass prism has refractive index 1.51.5. The correct relation between the angle of minimum deviation (δm)(\delta_m) and angle of refraction (r)(r) is

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Answer: (c)

  1. Thin prism: δm=(μ−1)A=(1.5−1)A=A2\delta_m = (\mu - 1)A = (1.5 - 1)A = \frac{A}{2}.
  2. At minimum deviation r=A2r = \frac{A}{2}.
  3. So δm=r\delta_m = r, the answer is (c).
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