A ray of light from a denser medium strikes a rarer medium. The reflected and refracted rays make an angle of 90^(@) with each other. The angle of reflection and refraction are r and r^(1). The critical angle would be

A ray of light from a denser medium strikes a rarer medium. The reflec

1.	A ray of light from a denser medium strikes a rarer medium. The reflected and refracted rays make an angle of 90^(@) with each other. The angle of reflection and refraction are r and r^(1). The critical angle would be
Answer» `SIN^(-1)(tan r)` `tan^(-1)(sinr)` `sin^(-1)(tanr^(1))` `tan^(-1)(sinr^(1))` Answer :A

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A ray of light from a denser medium strikes a rarer medium. The reflected and refracted rays make an angle of 90^(@) with each other. The angle of reflection and refraction are r and r^(1). The critical angle would be

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