Gujarat BoardEnglish MediumSTD 8ScienceLight2 Marks
Question
What is a periscope$?$ How many mirrors are there in a periscope$?$
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Answer
A periscope is a device that reflects the reflected ray again. It consists of a tube attached to a set of mirrors. There are $2$ mirrors in a periscope. The light from the object falls on one mirror that is placed at $45^\circ$ to the object and the light gets reflected. This reflected light in turn falls on another mirror and is again reflected until it reaches the eyepiece.
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