CBSE Class 12 Physics 2019 Outside Delhi Set 2 Paper

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Question : 4
Total: 9
Under what conditions does the phenomenon of total internal reflection take place? Draw a ray diagram showing how a ray of light deviates by 90 after passing through a right-angled isosceles prism.
Solution:  
Conditions
Diagram
Conditions :
1. Light travels from denser to rarer medium

2. Angle of incidence in denser medium must be greater than critical angle.
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