A ray of light is incident at an angle of `60^@` on a horizontal plane mirror. Through what angle should the mirror br tilted to

Correct Answer - `15^@`
To make the reflected ray horizontal, it must be turned further through `90^@ - 60^@ = 30^@`. Therefore, the mirror must be turned through `30//2 = 15^@`.

A ray of light is incident at an angle of `60^@` on a horizontal plane mirror. Through what angle should the mirror br tilted to make the reflected ra

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