Question

what is periscope?How it is use​

Answer 1

Answer:

Explanation:

A periscope is an optical instrument that uses a system of prisms, lenses or mirrors to reflect images through a tube. ... This simple periscope uses only flat mirrors as compared to the periscopes used on submarines, which are usually a complex optical system using both lenses and mirrors.

Answer 2

Answer:

A periscope is an optical instrument that uses a system of prisms, lenses or mirrors to reflect images through a tube. ... This simple periscope uses only flat mirrors as compared to the periscopes used on submarines, which are usually a complex optical system using both lenses and mirrors.

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