why should we keep 2 mirror strips parallel to each other in pericope ????...
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Because it works on reflection of light. 1 mirror in periscope and other mirror is parallel each other. 1st plane mirror reflects to 2nd mirror
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We should keep the 2 mirror strips parallel to each other in a periscope because the light reflected from the object should reach our eyes. It will reach only if the 2 mirror strips are parallel to each other. Then the reflected ray and the incident ray will lie on the same plane.
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