Is a good property
Is a function of tilt
Is not affected by the change of flying height between photographs
Is minimum when θ is 3°
B. Is a function of tilt
Equator
Terrestrial equator
0° latitude
All the above
B = bH/f
B =f/bH
B = b/fH
B = H/bf
Greater than the longitude of the place
Less than the latitude of the place
Equal to the latitude of the place
None of these
East of observer
West of observer
North of observer
South of observer
f/H
f/(H + h)
f/(H - h)
(H - h)/f
f sin θ
f cos θ
f tan θ
f sec θ
Ground elevation
Flying height
Length of air base
All the above
Rational horizon
True horizon
Celestial horizon
All the above
Astronomical latitude
Astronomical longitude
Astronomical bearing
All of these
High oblique
Low oblique
Vertical
None of these
Is prepared, by graphical method
Is suitable for large areas with less control
Is rapid and accurate
All the above
Base line of the left photograph of stereo pair
Base line of the right photograph of stereo pair
Sum of the base lines of stereo pair
Mean of the base lines of the stereo pair
58 cot α
58 tan α
58 sin α
58 cos α
7 h 00 m
7 h 30 m
8 h 00 m
9 h 00 m
1°
2°
3°
4°
500 m
1000 m
1500 m
2000 m
Control points for surveys of large areas
Control points for photogrammetric surveys
Engineering works, i.e. terminal points of long tunnels, bridge abutments, etc.
All the above
Photo principal point and ground principal point
Photo isocenter and ground isocenter
Photo plumb point and ground plumb point
All the above
5100 nautical miles
5700 nautical miles
120 nautical miles
500 nautical miles
Tension = (P - Ps)L/AE
Sag = L3w²/24P² where w is the weight of tape/m
Slope = (h²/2L) + (h4/8L3) where h is height difference of end supports
All the above
0.01 second
0.001 second
0.0001 second
None of these
sin a cos A
cos a sin A
tan a cot A
cot A tan a
The angle between the plane of the negative and the horizontal plane containing perspective axis is the tilt of the photograph
The direction of maximum tilt is defined by the photo principal line
The principal plane is truly vertical plane which contains perspective centre as well as principal point and plumb point
All the above
Its altitude and azimuth
Its declination and hour angle
Its declination and right ascension
All the above
Zenith
Celestial point
Nadir
Pole
Mean sun
True sun
Vernal equinox
All the above
Declination must be 0°
Declination must be 90°
Distance from the pole must be less than the latitude of the observer
Hour angle must be 180°
sin H = tan φ . cot δ
cos H = tan φ . cot δ
tan H = tan φ . cot δ
None of these
8,000 m
10,000 m
12,000 m
14,000 m
1000 km
800 km
600 km
500 km