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Lens Maker's Formula

The ray diagr...

Question

The ray diagram could be correct

n_{1} = n_{2} = n_{g}

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n_{1} = n_{2}

and

n_{1} < n_{g}

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n_{1} = n_{2}

and

n_{1} > n_{g}

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Solution

The correct option is C If $n_{1} = n_{2}$ and $n_{1} > n_{g}$
It is to be remembered that to make a lens nature opposite i.e. from convergent to divergent we should start using it in denser medium or if it is in dense medium then use it in rarer medium.

Hence, $n_{1} = n_{2} & n_{1} > n_{g}$
due to surrounding medium.

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The ray diagram could be correct

The correct option is C If n1=n2 and n1>ngIt is to be remembered that to make a lens nature opposite i.e. from convergent to divergent we should start using it in denser medium or if it is in dense medium then use it in rarer medium.Hence, n1=n2&n1>ngdue to surrounding medium.