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A ray of light passes through an equilateral prism such that an angle of incidence is equal to the angle of emergence and the latter is equal to  th the angle of prism. The angle of deviation is

a)

b)

c)

d)



Question ID - 153024 | SaraNextGen Top Answer

A ray of light passes through an equilateral prism such that an angle of incidence is equal to the angle of emergence and the latter is equal to  th the angle of prism. The angle of deviation is

a)

b)

c)

d)

1 Answer
127 votes
Answer Key / Explanation : (d) -

(d)

Angle of incidence = angle of emergence

Ie,

Also,  angle of equilateral prism =

Thus, angle of deviation

=

=(45 ) = 30

127 votes


127