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Geometrical Optics question

2020 · Q151
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Geometrical Optics question

2020 · Q151

NEETPhysicsGeometrical OpticsMCQ+4 / −1
The Brewster's angle ib for an interface should be :
  1. A
    30∘^\circ∘ < ib< 45∘^\circ∘
  2. B
    45∘^\circ∘ < ib< 90∘^\circ∘
  3. C
    ib = 90∘^\circ∘
  4. D
    0∘^\circ∘ < ib< 30∘^\circ∘
View written solutionFree

Correct answer: B

Refractive index μ\mu μ is equal to tangent of Brewster's angle ib
μ\mu μ = tan ib
1 < μ\mu μ < ∞\infty ∞
1 < tan ib < ∞\infty ∞
tan-1(1) < ib < tan-1(∞\infty ∞)
45∘^\circ ∘ < ib < 90∘^\circ ∘

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