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Standard X

Physics

Convex Lens

If the path o...

Question

If the path of parallel light through a concave lens is as shown in the figure, where $η, η_{1}$ and $η_{2}$ are refractive indices, then ................

η > η_{1} = η_{2}

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η = η_{1} < η_{2}

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η = η_{1} > η_{2}

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η < η_{1} = η_{2}

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Solution

The correct option is D $η = η_{1} > η_{2}$
As ray passed undeviated hence
$n = n_{1}$
From $n_{1}$ to $n_{2}$ light bends, hence $n_{1}$ is denser compared $n_{2}$
$∴$ $n = n_{1} > n_{2}$

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If the path of parallel light through a concave lens is as shown in the figure, where η,η1 and η2 are refractive indices, then ................

The correct option is D η=η1>η2As ray passed undeviated hencen=n1From n1 to n2 light bends, hence n1 is denser compared n2∴ n=n1>n2

If the path of parallel light through a concave lens is as shown in the figure, where $η, η_{1}$ and $η_{2}$ are refractive indices, then ................

The correct option is D $η = η_{1} > η_{2}$
As ray passed undeviated hence
$n = n_{1}$
From $n_{1}$ to $n_{2}$ light bends, hence $n_{1}$ is denser compared $n_{2}$
$∴$ $n = n_{1} > n_{2}$