In an optical square, the angle between the first incident ray and the last reflected ray is

Related MCQs

• The angle of intersection of the horizon glass and index glass in an optical square is
• The angle of intersection of the two plane mirrors of an optical square is
• In a lemniscate curve, the angle between the tangent at the end of the polar ray and the tangent at the commencement of the curve (i.e. straight) is
• The deflection angle for any chord is equal to the deflection angle for the proceeding chord minus the tangential angle for that chord.
• The angle between the reflecting surfaces of a prism square is
• The optical square is used to measure angles by
• The index glass in an optical square is
• An optical square is used for the same purpose as the cross-staff, but it is more accurate.
• 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 horizon glass in an optical square is