ray passes air to a medium find angle of incident?

given:

      angle of incident is twice the angle of refraction &refractive index is µ

options:

a.Cos-1(µ÷2)         b.2cos-1(µ÷2)              c.2sin-1( µ)               d.2sin(µ÷ 2)

 

 

 

 

 

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1 Answer

d.2sin(µ÷ 2)
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