While viewing through a level telescope and moving the eye slightly, a – McqOptions

MCQOPTIONS

1.	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.
Answer» D. free from parallax.

Discussion

No Comment Found

Related MCQs

The operation of forming or bringing the clear image of the object in the plane of cross hairs is known as ______
The establishment of line of sight, therefore, involves the following two essential conditions, the real image must be formed in front of the eyepiece, the plane of the image must coincide with that of the cross hairs.
The focal length of an objective varies with eyepiece.
The eyepiece magnifies the cross hairs.
In surveyor’s telescope, the convex lens nearest to the eye is called ____________
In surveyor’s telescope, the convex lens nearest to the object is called ______________
Surveyor’s telescope is an adaptation of Kepler’s telescope.
In geodetic surveys higher accuracy is achieved, if
Tilt of the staff in stadia tacheometry increases the intercept if it is
If h1 and h2 are the differences in level between ground and the formation levels, m is the slope of the sloping sides. D is the distance between the cross sections then, prismoidal correction for a level section is