Q. If f is the focal length of the camera lens and θ is the angle of tilt, the distance of the plumb point from the principal point will be

View solution

Q. Pick up the incorrect statement from the following. High oblique photographs

View solution

Q. The average eye base is assumed as

View solution

Q. Pick up the correct statement from the following :

View solution

Q. Pick up the incorrect statement from the following :

View solution

Q. To obtain photographs of an area of 1000 m average elevation, on scale 1 : 30, 000, with a camera of 30 cm focal length, the flying height is

View solution

Q. If the image of a triangulation station of R.L. 500 m is 4 cm from the principal point of a vertical photo taken from an altitude of 2000 m, above datum, the height displacement will be

View solution

Q. An aerial photograph may be assumed as

View solution

Q. If the equatorial distance between two meridians is 100 km, their distance at 60° latitude will be

View solution

Q. The rate of change of parallax dp/dh with respect to change in h, may be expressed as

View solution

Q. The displacement of the pictured position of a point of h elevation on a vertical photograph taken with a camera of 30 cm focal length, from an altitude of 3000 m, is

View solution

Q. The net ground area of a vertical photograph 20 cm x 20 cm on scale 1 : 10,000 having overlaps 60% and 30%, is

View solution

Q. Rotation of the camera at exposure about its vertical axis, is known as

View solution

Q. The difference of height of two points whose parallax difference is 0.8 mm on a pair of stereo pair taken from a height H is 100 m. If mean photo base is 95.2 mm, the flying height is

View solution

Q. The flying height of the camera is 1, 000 m above mean ground level, the distance of the top of a Minar from a nadir point is 10 cm and the relief displacement of Minar is 7.2 mm. The height of the Minar, is

View solution

Q. On vertical photographs, height displacement is

View solution

Q. The foot of the perpendicular on the picture plane through the optical centre of the camera lens, is known as

View solution

Q. The point where a vertical line through the optical centre of the camera lens intersects the ground, is known as

View solution

Q. At eastern elongation, the pole star moves

View solution

Q. Circumpolar stars

View solution