An imaginary line joining the point of intersection of the cross-hairs of the diaphragm and the optical centre of the object glass, is known as

Related MCQs

• A line joining the optical centre of the object glass and the centre of the eye piece, is known as
• The imaginary line passing through the intersection of cross hairs and the optical center of the objective, is known as
• The angle of intersection of the horizon glass and index glass in an optical square is
• An imaginary line joining the points of equal elevation on the surface of the earth, represents
• An imaginary line tangential to the longitudinal curve of the level at the centre of the tube is called
• An imaginary line tangential to the longitudinal curve of the bubble tube at its middle point is called
• The angle of intersection of the two plane mirrors of an optical square is
• A line joining apex of triangle to a fixed point on the opposite side is called…..
• A line joining the apex of a triangle to some fixed point on the opposite side is called a
• An imaginary line lying throughout the surface of ground and preserving a constant inclination to the horizontal is known as