, Prove the following statements.If the angle of incidence and angle o

1.	, Prove the following statements.If the angle of incidence and angle ofa.emergence of a light ray falling on aglass slab are i and e respectively, provethat, i e.
Answer» Let ABCD is the glass slabAssume that the air Index and glass index = n₁ and n₂From the diagram ,Consider a light ray WX makes the∠i on the surface AB.Reflected light XY to the Normal NN' makes the angle ∠r₁Refracted light YZ outside the slab CD makes the angle∠₂Here we observe that AB and CD are parallel and XY is transversel. Applying snell law on first surface (AB) & CD we get simultaneously -----→(a) ----→(b) On multiplying eq. (a) & (b) , we get orHence,sin i = sin e ∴

, Prove the following statements.If the angle of incidence and angle ofa.emergence of a light ray falling on aglass slab are i and e respectively, provethat, i e.

Answer»

Let ABCD is the glass slabAssume that the air Index and glass index = n₁ and n₂From the diagram ,Consider a light ray WX makes the∠i on the surface AB.Reflected light XY to the Normal NN' makes the angle ∠r₁Refracted light YZ outside the slab CD makes the angle∠₂Here we observe that AB and CD are parallel and XY is transversel.

Applying snell law on first surface (AB) & CD we get simultaneously

-----→(a)

----→(b)

On multiplying eq. (a) & (b) , we get

orHence,sin i = sin e

∴

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, Prove the following statements.If the angle of incidence and angle ofa.emergence of a light ray falling on aglass slab are i and e respectively, provethat, i e.

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