If a ray of light in a denser medium strikes a rarer medium at an angle of incidence i, the angles of reflection and refraction are r and r1. If the refracted and reflected rays are qt right angles to each other, critical angle for the given pair of media is A) sin^-1 (tan r1)B) sin^-1 (tan r)C) tan^-1 (sin i)D) cot^-1 (tan i)

Unknown guy , 6 Years ago

Grade 11