Q. If α, H, A and δ be the altitude, hour angle, azimuth and declination of a circumpolar star at its elongation, in latitude λ, the following relation holds good

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Q. The relation between the air base (B), photographic base (b), flying height (H) and the focal length (f) of a vertical photograph, is

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Q. The scale of a vertical photograph of focal length f taken from height of H metres above M.S.L., at a point of reduced level h, is

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Q. The correction applied to the measured base of length L is

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Q. If v, t and f/H are the ground speed of the aircraft, the shutter speed of the camera and the scale of the photograph respectively, then the amount of image displacement

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Q. The scale of a tilted photograph of focal length f taken from an altitude H, along the plate parallel through principal point is

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Q. The maximum error in radial line assumption, is

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Q. α and β are the angles subtended by a point of elevation h at their air station with respective plumb points. Photo scale and focal length of the lens being S and f respectively. Parallax displacement of the point due to relief, is

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Q. The scale of a tilted photograph of focal length f, taken from an altitude H, along the plate parallel through plumb point, is

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Q. If E is the spherical excess and R the radius of the earth, the surface area of the triangle, is

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Q. For a spherical triangle ABC, pick up incorrect statement

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Q. If δ is the declination of the Polaris and λ is the latitude of the place, the azimuth of the polaris, is

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Q. The product of the distances of plumb point and horizon point of a vertical photograph from its principal point, is

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Q. H is the flying height above mean ground level and f is the principal distance of a vertical photograph. The mean scale of the photographs is

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Q. Invar tapes used for measuring base lines, is made of nickel-iron alloy containing nickel

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Q. Triangulation surveys are carried out for locating

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Q. The movement of the projector in y-direction, introduces in the model a y-parallax

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Q. The angle between the direction of star and the direction of earth's axis of rotation is called

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Q. Pick up the correct statement from the following :

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Q. The circle in which a plane tangent to the earth's surface at the point of observation, intersects the celestial sphere, is called

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