Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsMedium2 minQB

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A light ray incident along vector $2 \hat{i} + 4 \hat{j} + 5 \hat{k}$ strikes on the $x - z$ plane from medium-I of refractive index 2 and enters intomedium-II of refractive index $μ_{2}$ . The value of $μ_{2}$ for which the ray is just totally reflected from the boundary, is

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Answer:

Solution:

$μ_{1} sini = μ_{2} sin 9 0^{\circ}$

$tan i = \frac{( 2 ^{2} + ( 5 ) ^{2} )}{4} \Rightarrow i = 3 7^{\circ} \Rightarrow μ_{2} = \frac{6}{5}$

Stream:JEESubject:PhysicsTopic:Geometrical Optics

⏱ 2mℹ️ Source: QB

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