Verified Solution • 2025–26 Session moderate

QAIPMT-2010-Ch-1989: NEET 2010 Physics - Class 12 AIPMT-2010-Ch-1989 Solution: The speed of light in media \(M_1\) and \(M_2\) are \(1.5…

The speed of light in media M1M_1 and M2M_2 are 1.5×1081.5\times10^8 m/s and 2.0×1082.0\times10^8 m/s respectively. A ray of light enters from medium M1M_1 to M2M_2 at an incidence angle i. If the rays suffers total internal reflection, the value of i is

Multiple Choice Options

  • A Equal to sin⁡−1(2/3)\sin^{-1}(2/3)
  • B Equal to or less than sin⁡−1(3/5)\sin^{-1}(3/5)
  • C Equal to or greater than sin⁡−1(3/4)\sin^{-1}(3/4)
  • D Less than sin⁡−1(2/3)\sin^{-1}(2/3)

Step-by-Step Verified Solution

Refractive index for medium M 1 is _ 1 = 3 _ 10 8 1.5 _ 10 8 = 2 Refractive index for medium M 2 is _ 2 = 3 _ 10 8 2.0 _ 10 8 = 3 2 For total internal reflection, sini � sinC But sinC = _ 2 _ 1 sini � _ 2 _ 1 � 3 / 2 2 _ i � sin _ 1 ( 3 4 )

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