1.

A beam of light is sent along the line x-y=1, which after refracting from the x-axis enters the oppositi side by turining through 30^@ towards the normal at the point of incidence on the x-axis. Then the equation of the refracrted ray is

Answer»

`(2-sqrt3)x-y=2+sqrt3`
`(2+sqrt3)x-y=2+sqrt3`
`(2-sqrt3)x-y=2+sqrt3`
`y=(2-sqrt3)(x-1)`

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