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Question
Choose the correct answer from given options
The relationship between Brewster angle θ and speed of light v in the denser medium is
Options
c cosθ = v
v tanθ = c
c = v tanθ
v cosθ = c
Solution
Disclaimer: Two of the given option (b and c) are same.
Let the absolute refractive index of the given medium be μ and the speed of light in vacuum be c.
From Brewster's law:
`tan theta = mu`
The refractive index can also be written as:
`mu = c/v`
⇒ `tan theta = c/v`
⇒ `c = v tan theta`
Hence, the correct answer is option v tanθ = c.
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