The angle of field of the telescope

Related MCQs

• If altitude bubble is provided both on index frame as well as on telescope of a theodolite, then the instrument is levelled with reference to i) altitude bubble on index frame ii) altitude bubble on index frame if it is to be used as a level iii) altitude bubble on telescope iv) altitude bubble on telescope if it is to be used as a level The correct answer is
• Generally, the deflection angle is measured twice, once with the telescope normal and once with the telescope reversed.
• In modern telescope internal focusing telescope is used.
• 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.
• The deflection angle for any chord is equal to the deflection angle for the proceeding chord minus the tangential angle for that chord.
• The process of turning the telescope about the vertical axis in horizontal plane is known as
• A telescope is said to be inverted if its
• The cross hairs in the surveying telescope are placed
• In an internal focussing type of telescope, the lens provided is
• While viewing through a level telescope and moving the eye slightly, a relative movement occurs between the image of the levelling staff and the cross hairs. The instrument is