invented the periscope ....

______ invented the periscope .

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The correct Answer is:

Hippolyte Marie-Davy

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Laws of reflection are applicable for .
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Angle of deviation means .
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Angle of incidence means .
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Angle of reflection means .
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Glancing angle of incidence means .
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Glancing angle and angle of incidence are angle.
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A plane mirror forms image.
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When the two plane mirror are parallel to each other, then the number ...
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During reflection of light , and remains constant but changes.
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The formula for angle of deviation, d= .
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When two plane mirrors are at the angle 'theta' with each other, the n...
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When two plane mirrors are at right angle with each other, the number ...
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invented the periscope .
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Reflection periscopes can be constructed by mirrors.
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phenomenon is used in a reflecting periscope.
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