Q. Assuming human normal vision distance 25 cm, smallest measurable angle 20", and introcular distance 6.5 cm, the smallest depth to be discerned is

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Q. The main object of the astronomer to obtain

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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

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

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Q. The average eye base is assumed as

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Q. Pick up the correct statement from the following :

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Q. Pick up the incorrect statement from the following :

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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

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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

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Q. An aerial photograph may be assumed as

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

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

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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

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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

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

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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

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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

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Q. On vertical photographs, height displacement is

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

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

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