Reflected light can be reflected again.This principle is used in the which of the following instruments?

Telescope

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Periscope

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Microscope

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Gyroscope

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Solution

The correct option is B
Periscope

A periscope is an optical instrument that allows the viewing of objects that are not in direct line of sight. As observed from the figure, the beam of light from the object is reflected twice by the two mirror surfaces one after the other and this helps us to see the distant objects over the obstacles.

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Light rays can be reflected multiple times.This principle is used in the which of the following instrument?

θ

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