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Geometrical Optics question

2022 · 27 Jun · Shift 1 · Q57
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  5. /2022 · 27 Jun · Shift 1 · Q57

Geometrical Optics question

2022 · 27 Jun · Shift 1 · Q57

JEE MainPhysicsGeometrical OpticsMCQ+4 / −1
Consider a light ray travelling in air is incident into a medium of refractive index 2n\sqrt{2n}2n​. The incident angle is twice that of refracting angle. Then, the angle of incidence will be :
  1. A
    sin⁡−1(n){\sin ^{ - 1}}\left( {\sqrt n } \right)sin−1(n​)
  2. B
    cos⁡−1(n2){\cos ^{ - 1}}\left( {\sqrt {{n \over 2}} } \right)cos−1(2n​​)
  3. C
    sin⁡−1(2n){\sin ^{ - 1}}\left( {\sqrt {2n} } \right)sin−1(2n​)
  4. D
    2cos⁡−1(n2)2{\cos ^{ - 1}}\left( {\sqrt {{n \over 2}} } \right)2cos−1(2n​​)
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