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Sahay Sir > Question Answers > Cengage NEET by C.P Singh > Part 2 > Chapter 17 - Refraction of Light by Plane Surfaces > Which of the following options are correct regarding prism? 1. A ray of light will not come out of a prism (whatever be the angle of incidence) if A>2C i.e. if μ>cosec(A/2) 2. Deviation will be maximum when angle of incidence i is maximum i.e. i=90^∘ 3. In case of minimum deviation (i) angle of incidence i=angle of emergence i′ (ii) r=r′=A/2 (iii) μ=sin(A+δm/2)/sin(A/2) (iv) If the prism is equilateral (or isosceles), the ray inside the prism will be parallel to its base 4. All options are correct

Which of the following options are correct regarding prism? 1. A ray of light will not come out of a prism (whatever be the angle of incidence) if A>2C i.e. if μ>cosec(A/2) 2. Deviation will be maximum when angle of incidence i is maximum i.e. i=90^∘ 3. In case of minimum deviation (i) angle of incidence i=angle of emergence i′ (ii) r=r′=A/2 (iii) μ=sin(A+δm/2)/sin(A/2) (iv) If the prism is equilateral (or isosceles), the ray inside the prism will be parallel to its base 4. All options are correct

Critical angle of light passing from glass to water is minimum for : 1. red colour 2. green colour 3. yellow colour 4. violet colour