Description : What is parallax error ?
Last Answer : The apparent change in position of a target as the direction of vision changes is called parallax. For this reason, the measurement error is called parallax error.
Last Answer : of sight Direction Of change For Any Of the object Of location Apparently To change Parallax And As a result Lessons To take That Wrong Is Him Parallax Error Says.
Description : A star is 5.5 light years away from the Earth. How much parallax in arcsec will it subtend when viewed from two opposite points
Last Answer : A star is 5.5 light years away from the Earth. How much parallax in arcsec will it subtend ... from two opposite points along the orbit of the Earth?
Description : Explain how parallax method is used to measure distance of a star from Earth.
Last Answer : Explain how parallax method is used to measure distance of a star from Earth.
Description : What is parallax?
Last Answer : What is parallax?
Description : What is the effect of distance from an object on parallax angles?
Last Answer : The parallax angle is inversely proportional to thedistance.
Description : Is a star with no measurable parallax is very close to Earth.?
Last Answer : No, if you can measure no parallax, the star is far away -further than a certain distance.
Description : Electrostatic forces in high voltage circuits cause indicating instruments to give ____________. A. parallax readings B. highly intuitive readings C. highly accurate readings D. inaccurate readings
Last Answer : Answer: D
Description : Removal of parallax, may be achieved by focussing (A) The objective (B) The eye-piece (C) The objective and the eye-piece (D) None of these
Last Answer : (C) The objective and the eye-piece
Description : Pick up the correct statement from the following: (A) If the image of the object does not fall on the plane of the cross-lines, parallax exists (B) Parallax has nothing to do with the eyepiece (C) The eyepiece is adjusted for clear vision of the cross hairs (D) All the above
Last Answer : (D) All the above
Description : 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 (A) Correctly focussed (B) Not correctly focussed (C) Said to have parallax (D) Free from parallax
Last Answer : (C) Said to have parallax
Description : If flying height of a spacecraft is H, the length of air base is B and the parallax difference between two points is dp, then the difference in height (A) h = dp/(B/H) (B) h = (B/H) dp (C) h = dp/(H/B) (D) h = (H/B) dp
Last Answer : Answer: Option A
Description : Which one of the following statements is not correc t? (a) Parallax error is eliminated when there is no change in the staff reading when eye is moved up and down (b) The objective lens is ... (d) The eyepiece need not be adjusted after the first set up when the same surveyor is taking readings
Last Answer : (b) The objective lens is to be focused towards a white or bright background for clear visibility of cross-hairs
Description : In a theodolite a condition arising when the image formed by the objective is not in the plane of cross hairs is known as (a) Parallax* (b) Out of sight (c) Out of place (d) Transiting
Last Answer : (a) Parallax*