Surveying
If the R.L. of a B.M. is 100.00 m, the back- sight is 1.215 m and the foresight is 1.870 m, the R.L. of the forward station is

99.345 m
100.345 m
100.655 m
101.870 m

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Surveying
Homologous points are

Nodal points of the camera lens
Corresponding points on the ground and photograph
Opposite corners of a photograph
Plumb points of stereo pair of photographs

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Surveying
Spring tides are caused when

Solar tidal force and lunar tidal force both coincide
None of these
Solar tidal force acts opposite to lunar tidal force
Sun and moon are in line with earth

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