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NEET 2023

NEET 2023 Physics question on Ray Optics

Light travels a distance x in time t1t_1 in air and 10x in time t2t_2 in another denser medium. What is the critical angle for this medium?
  1. A.
    sin⁡−1(t2t1)\sin^{-1}\left(\dfrac{t_2}{t_1}\right)
  2. B.
    sin⁡−1(10t2t1)\sin^{-1}\left(\dfrac{10t_2}{t_1}\right)
  3. C.
    sin⁡−1(t110t2)\sin^{-1}\left(\dfrac{t_1}{10t_2}\right)
  4. D.
    sin⁡−1(10t1t2)\sin^{-1}\left(\dfrac{10t_1}{t_2}\right)
Show answer

Correct option: D

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