41. A star is said to elongate
42. If the intercept on a vertical staff is ob-served as 0.75 m from a tacheometer, the horizontal distance between tacheometer and staff station is
43. The latitude of a place was obtained by subtracting the zenith distance of a star from its declination, the observed star was between
44. The latitude of a place was obtained by subtracting the declination of a star from its zenith distance, the observed star was between
45. The flying height of the camera is 1,000 m above mean ground level, the distance of the top of a building from a nadir point is 10 cm and the relief displacement of building is 7.2 mm. The height of the building, is
46. The stereo plotting instruments are generally manufactured on the principle of
47. The true and mean suns occupy the same meridian at the same time on
48. If E is the spherical excess and R the radius of the earth, the surface area of the triangle, is
49. The station which is selected close to the main triangulation station, to avoid intervening obstruction, is not known as
50. In a spherical triangle ABC right angled at C, sin b equals to
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