A line joining the optical centre of the object glass and the centre of the eye piece, is known as

Related MCQs

• 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
• The angle of intersection of the horizon glass and index glass in an optical square is
• The magnification of a telescope is the ratio of the angle subtended at the eye by the virtual image of the object to that subtended by the object.
• When the object lies on the left hand side of the chain line, then while taking offset with an optical square, it is held in
• The index glass in an optical square is
• The horizon glass in an optical square is
• The ratio of the focal length of the objective to that of an eye-piece of a telescope is called its
• The imaginary line passing through the intersection of cross hairs and the optical center of the objective, is known as
• An imaginary line joining the points of equal elevation on the surface of the earth, represents
• A line joining apex of triangle to a fixed point on the opposite side is called…..