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Geometrical Optics question

2025 · 7 Apr · Shift 2 · Q68
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  5. /2025 · 7 Apr · Shift 2 · Q68

Geometrical Optics question

2025 · 7 Apr · Shift 2 · Q68

JEE MainPhysicsGeometrical OpticsMCQ+4 / −1
A transparent block A having refractive index μ=1.25\mu = 1.25μ=1.25 is surrounded by another medium of refractive index μ=1.0\mu = 1.0μ=1.0 as shown in the figure. A light ray is incident on the flat face of the block with incident angle θ\thetaθ as shown in the figure. What is the maximum value of θ\thetaθ for which light suffers total internal reflection at the top surface of the block? JEE Main 2025 (Online) 7th April Evening Shift Physics - Geometrical Optics Question 7 English
  1. A
    tan⁡−1(4/3)\tan^{-1}(4/3)tan−1(4/3)
  2. B
    sin⁡−1(3/4)\sin^{-1}(3/4)sin−1(3/4)
  3. C
    tan⁡−1(3/4)\tan^{-1}(3/4)tan−1(3/4)
  4. D
    cos⁡−1(3/4)\cos^{-1}(3/4)cos−1(3/4)
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