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Three plane mirrors form an equilate...

Three plane mirrors form an equilateral triangle with each side of length l. There is a small hole at a distance `l gt 0` from one of the corners as shown in the figure . A ray of light is passed through the hole at an angle ` theta ` and can only come out through the same hole . The cross section of the mirror configuration and the ray of light lie on the same plane .

which of the following statement (s) and (are ) correct ?

A

The ray of light will come out for ` theta = 30 ^@ ,` for `0 lt l lt L.`

B

there is an angle for `l = (L)/(2)` at which the ray of light will come out after two reflections

C

The ray of light will NEVER come out for ` theta = 60^@ ,` and `l= (L )/(3)`

D

The ray of light will come out for ` theta = 60 ^@ , and 0 lt l lt (L )/(2)` after six reflections

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