One concave and one convex lens have same focal length. If they are kept in contact, combination behaves as .......

One concave and one convex lens have same focal length. If they are ke

1.	One concave and one convex lens have same focal length. If they are kept in contact, combination behaves as .......
Answer» CONCAVE lens Convex lens TRANSPARENT plane plate Curved surface Solution :`1/f_1=1/f+1/f` `1/f_1=(1)/(-f)+1/f`[`because` For concave lens f is NEGATIVE and for convex lens f is positive] `therefore 1/f_1=0``thereforef_1=infty` `therefore` Transparent plane plate.

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One concave and one convex lens have same focal length. If they are kept in contact, combination behaves as .......

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