In surveyor’s telescope, the convex lens nearest to the object is called ______________

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
• In modern telescope internal focusing telescope is used.
• Generally, the deflection angle is measured twice, once with the telescope normal and once with the telescope reversed.
• If f1 and f2 are the distances from the optical center of a convex lens of focal length f to conjugate two points P1 and P2 respectively, the following relationship holds good
• In an internal focussing type of telescope, the lens provided is
• In internal focusing telescope brilliancy of image reduces due to extra internal lens.
• When the anallatic lens is provided in the telescope of a tacheometer, the additive constant is zero.
• 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.
• Prismatic compass gives more accuracy than surveyors compass.
• The real image of an object formed by the objective must lie at the centre of telescope.