If the critical angle for glass-air interface is 45o, what will be the incidence angle for total int….

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If the critical angle for glass-air interface is 45^o, what will be the incidence angle for total internal reflection to take place for the given glass-air interface?

Options :-

1. θ < 45^o
2. θ > 45^o
3. θ = 45^o
4. Total internal reflection occurs only when light ray travels from rarer to denser medium

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