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Manipal MET2020PhysicsRay Optics

The critical angle for glass water interface ( . if ._a _g= 3 2 , _a _w= 4 3 )

Options

  1. A⁻¹ ( 8 9 )
  2. B⁻¹ ( 9 8 )
  3. C⁻¹ ( 3 2 )
  4. D⁻¹ ( 4 3 )

Correct answer

A. ⁻¹ ( 8 9 )

Step-by-step solution

Critical angle ( _c ) for glass water interface can be written as Sin _c= _a _w _a _g = 4 / 3 3 / 2 = 8 9 _c= ⁻¹(8 / 9)

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