Question

in periscope, is combination of lenses used?​

Answer 1

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$\color{Red}{No ,ConcaveLensIsUsed}$

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Answer 2

Answer:

the concave lens is used in periscope

Explanation:

In its simplest form, it consists of an outer case with mirrors at each end set parallel to each other at a 45° angle. This form of periscope, with the addition of two simple lenses

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