1.

The polarizing angle of glass is 57^(@).A ray of light which is incident at this angle will have an angle of refraction as :

Answer»

`33^(@)`
`38^(@)`
`25^(@)`
`43^(@)`

Solution :`mu = tan p`
p is POLARISING angle `mu` is REFRACTIVE INDEX
`1.5 = (sin p)/(sin R)(because p = i)`
`sin r = (sin p)/(1.5) = (sin 57^(@))/(1.5)`
` sin r = (0.8387)/(1.5) = 0.5580`
`therefore r = 33^(@)` (angle of refraction).


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