Answer:
They are used as looking glass.
They are used in solar cookers.
They are also used in constructing periscope which is used in submarines.
They are also used to make kaleidoscope, a toy which produces beautiful patterns.
They are also used in various scientific instruments.
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Answers & Comments
Answer:
They are used as looking glass.
They are used in solar cookers.
They are also used in constructing periscope which is used in submarines.
They are also used to make kaleidoscope, a toy which produces beautiful patterns.
They are also used in various scientific instruments.