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AP EAMCET202125 Aug 2021Evening ShiftPhysicsRay OpticsActual

If refractive index of water is 4 3 and that of a given glass slab immersed in it is 5 3 . The value of critical angle for a ray of light tending to go from glass to water is

Options

  1. A⁻¹ ( 4 5 )
  2. B⁻¹ ( 3 4 )
  3. C⁻¹ ( 5 3 )
  4. D⁻¹ ( 4 3 )

Correct answer

A. ⁻¹ ( 4 5 )

Step-by-step solution

Given, refractive index of water, _w _a=4 / 3 Refractive index of glass slab, _g _a=5 / 3 Refractive index of combined media aligned & = g _a _w _a = 5 3 3 4 & = 5 4 aligned Critical angle, C= ⁻¹ ( 1 refractive index ) C= ⁻¹ ( 4 5 )

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