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Geometrical Optics question

2023 · 11 Apr · Shift 1 · Q51
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  5. /2023 · 11 Apr · Shift 1 · Q51

Geometrical Optics question

2023 · 11 Apr · Shift 1 · Q51

JEE MainPhysicsGeometrical OpticsMCQ+4 / −1
The critical angle for a denser-rarer interface is 45∘45^{\circ}45∘. The speed of light in rarer medium is 3×108 m/s3 \times 10^{8} \mathrm{~m} / \mathrm{s}3×108 m/s. The speed of light in the denser medium is:
  1. A
    2.12×108 m/s2 .12 \times 10^{8} \mathrm{~m} / \mathrm{s}2.12×108 m/s
  2. B
    5×107 m/s5 \times 10^{7} \mathrm{~m} / \mathrm{s}5×107 m/s
  3. C
    2×108 m/s\sqrt{2} \times 10^{8} \mathrm{~m} / \mathrm{s}2​×108 m/s
  4. D
    3.12×107 m/s3.12 \times 10^{7} \mathrm{~m} / \mathrm{s}3.12×107 m/s
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