A glass prism of refractive index 1.5 is immersed in water (refractive index 3 4 ) as shown in figure. A light beam incident normally on the face A B is totally reflected to reach the face BC , if

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A glass prism of refractive index 1.5 is immersed in water (refractive index 3 4 ​ ) as shown in figure. A light beam incident normally on the face A B is totally reflected to reach the face BC , if

TestHub · Accepted Answer

For total internal reflection on face A C θ > critical angle ( C ) and sin θ ≥ sin C ​ sin θ ≥ w μ g ​ ​ 1 ​ sin θ ≥ μ g ​ μ w ​ ​ ⇒ sin θ ≥ 2 3 ​ 3 4 ​ ​ ∴ sin θ ≥ 9 8 ​ . ​

Physics - Geometrical Optics Question with Solution | TestHub

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