Question

a what is the angle between two
plane mirror in beriscope​

Answer 1

Answer:

(1) A periscope consists of a long tube T having two plane mirrors M1, and M2 fitted at its two ends. (2) The two plane mirrors are fitted in such a way that they are parallel to one another and their reflecting surfaces face each other. (3) Each plane mirror, however, makes an angle of 45° with the side of the tube

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Answer 2

Answer:

A periscope is a useful example of the law of reflection at work. It's important that your mirrors are placed at a 45° angle, because light always reflects away from a mirror at the same angle that it hits it. In a periscope, light from an object strikes the top mirror at 45° and bounces off at the same angle.