A transparent liquid of refractive index √2 fills an equilateral hollow prism. Find the angle of minimum deviation, in degrees.

Question

G1 Physics · Accepted Answer

For an equilateral prism: A = 60° At minimum deviation: r₁ = r₂ = A/2 = 30° Using Snell's law: μ = sin i/sin r √2 = sin i/sin 30° = sin i/(1/2) Thus: sin i = 1/√2 i = 45° Minimum deviation: δₘ = 2i - A = 90° - 60° = 30° Final answer: 30.