Figure shows two spherical surface of radii R and 2 R separating three transparent media of refractive index μ = 4 , μ = 2 and μ = 1 . A ray of light travelling in a medium μ = 1 is incident on outer sphere tangentially. The net deviation s

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Figure shows two spherical surface of radii R and 2 R separating three transparent media of refractive index μ = 4 , μ = 2 and μ = 1 . A ray of light travelling in a medium μ = 1 is incident on outer sphere tangentially. The net deviation suffered by light ray will be

Quantrex Academy · Accepted Answer

Correct answer: C. 240 °

Path of light ray for minimum deviation will be sin ⁡ 90 ° = 2 sin ⁡ θ ⇒ θ = 30 ° Deviation = 60 ° There are 4 such deviations therefore total deviation = 240 ° .

Figure shows two spherical surface of radii R and 2 R separating three transparent media of refractive index μ = 4 , μ = 2 and μ = 1 . A ray of light travelling in a medium μ = 1 is incident on outer sphere tangentially. The net deviation suffered by light ray will be

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