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Q.

The Brewster angle for the glass-air interface is 54.74o.If a ray of light going from air to glass strikes at an angle of incidence 45o,then the angle of refraction is (tan 54.74o=2)

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a

60o

b

30o

c

25o

d

54.740

answer is B.

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Detailed Solution

μ=tan 54.74o=2 ∴sin r=sin iμ=sin 45o2=12⇒r=30o

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The Brewster angle for the glass-air interface is 54.74o.If a ray of light going from air to glass strikes at an angle of incidence 45o,then the angle of refraction is (tan 54.74o=2)