Ques). Calculate critical angle for a light ray moving from a medium of refractive index 1.42 to air.
Chapter- Refraction at Plane Surfaces.
~Answer is 45° (i need explanation/steps)
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sinic=1/refractive index
sinic=1/1.42
sinic=1/√2
ic=sin-1 1/√2
ic=45 degree.
Hope so this will help u dear.
sinic=1/1.42
sinic=1/√2
ic=sin-1 1/√2
ic=45 degree.
Hope so this will help u dear.
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