1.

A ray of light, incident on an equilateral glass prismmu_(g) = sqrt(3)) moves parallel to the base line of the prims inside it. Find the angle of incidence for this ray.

Answer»

SOLUTION :
From the diagram, `r = 30^(@)`
Also `n_(21) = ( sin i) /( sin r )`
`rArrsqrt(3) = ( sin i)/(sin 30)`
`RARR sin i=(sqrt(3) xx (1)/(2)`
`rArr i = 60^(@)`


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