76. Pick up the incorrect statement from the following :
77. 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
78. 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
79. Rotation of the camera at exposure about its vertical axis, is known as
80. 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
81. Qutab-ud-din Aibak started the construction of Qutub Minar in Delhi in memory of the -------?
82. 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
83. On vertical photographs, height displacement is
84. Assuming human normal vision distance 25 cm, smallest measurable angle 20", and introcular distance 6.5 cm, the smallest depth to be discerned is
85. The main object of the astronomer to obtain
86. 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
87. Pick up the incorrect statement from the following. High oblique photographs
88. The altitudes of a circumpolar star at culminations are 70° and 10°, both culminations being north of zenith. The latitude of the place, is
89. The true and mean suns occupy the same meridian at the same time on
90. The prime vertical passes through
91. Homologous point is
92. The latitude of a place was obtained by subtracting the declination of a star from its zenith distance, the observed star was between
93. If S is the sum of three angles of a spherical triangle, the spherical excess equals
94. The want of correspondence in stereo-photographs
95. The latitude of a place was obtained by subtracting the zenith distance of a star from its declination, the observed star was between
96. When a star is between the pole and the horizon, the relationship between latitude (λ), zenith distance (z) and declination δ, is
97. The distance between the minor control point and the principal point should be equal to
98. The great circle whose plane is perpendicular to the axis of rotation of the earth, is called
99. The Polaris describes a small circle round the pole whose radius is approximately
100. The plane at right angle to the zenith-nadir line and passing through the centre of the earth, is called