A beam of light in air is incident upon the smooth plane surface of a piece of flint glass making an angle of 30° with its plane. If the reflected beam and refracted beam are perpendicular to each other, what is the index of refraction of flint glass with respect to air ? (1) 1/2 (2) √3 /2 (3) 2 /√3 (4) √3

A beam of light in air is incident upon the smooth plane surface of a

1.	A beam of light in air is incident upon the smooth plane surface of a piece of flint glass making an angle of 30° with its plane. If the reflected beam and refracted beam are perpendicular to each other, what is the index of refraction of flint glass with respect to air ? (1) 1/2 (2) √3 /2 (3) 2 /√3 (4) √3
Answer» Correct option is (4) √3

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