24 hours 10 minutes
20 hours 25 minutes
24 hours 50 minutes
23 hours 50 minutes
C. 24 hours 50 minutes
Is the period of time taken by the earth in making a complete rotation with reference to stars
Is slightly shorter than an ordinary solar day
Is divided into the conventional hours, minutes and seconds
All the above
B = bH/f
B =f/bH
B = b/fH
B = H/bf
Meridian
Vertical circle
Prime vertical
None of these
1 in 12
1 in 10
1 in 8
1 in 6
The area is divided into triangular figures
Control stations are located from which detailed surveys are carried out
Sides are not measured excepting the base line
All the above
Hour angle
Azimuth
Right ascension
Declination
High oblique
Low oblique
Vertical
None of these
By subtracting their longitudes if places are in the same hemisphere
By adding their longitudes if places are in the different hemispheres
By subtracting the sum of their longitudes exceeding 180° from 360° if places are in different hemispheres
All the above
A great circle passing through the place and the poles
A great circle whose plane is perpendicular to the axis of rotation and it also passes through the place
A semi-circle which passes through the place and is terminated at the poles
An arc of the great circle which passes through the place and is perpendicular to the equator
1 cm
2 cm
3 cm
4 cm
Elevation of the elevated pole
Declination of the observer's zenith
Angular distance along the observer's meridian between equator and the observer
All the above
sin α = sin φ cosec δ
sin α = sin φ sec δ
sin α = cos φ sec δ
sin α = cos φ cosec δ
πR²E/90°
πR²E/180°
πR²E/270°
πR²E/360°
29 days
29.35 days
29.53 days
30 days
Plane surveying
Geodetic surveying
Star observations
Planet observations
30°
35°
40°
45°
8,000 m
10,000 m
12,000 m
14,000 m
March 21
June 21
September 21
December 22
Tangents of two adjacent parts
Sines of two adjacent parts
Cosines of two adjacent parts
Both (a) and (b) above
Equator
Celestial equator
Ecliptic
None of these
Vernal equinox
Autumnal equinox
Summer solstice
Winter solstice
sin H = tan φ . cot δ
cos H = tan φ . cot δ
tan H = tan φ . cot δ
None of these
Opposite corners of a photograph
Nodal points of the camera lens
Corresponding points on the ground and photograph
Plumb points of stereo pair of photographs
Altitude and azimuth system
Declination and hour angle system
Declination and right ascension system
Declination and altitude system
Rational horizon
True horizon
Celestial horizon
All the above
Normal to base line
Parallel to base line
Both (a) and (b)
Neither (a) nor (b)
Mean sun
True sun
Vernal equinox
All the above
180° eastward
180° westward
180° east or westward
360° eastward
h tan α/S
h tan β/S
h (tan α + tan β)/S
h (tan α - tan β)/S
North pole
Pole star
Celestial pole
All the above