An incident ray strikes a plane mirror at an angle of 20 deg with the mirror. The angle between the incident ray and reflected ray is ____.
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When a bullet is fired from a gun, the gun moves in the opposite direction. This illustrates Newton's
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Cannis Familiaris is the scientific name of
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A rectangle with one side 4 cm is inscribed in a circle of radius 2.5 cm. The area of the rectangle in sq.cm is: