Related Questions

If flying height of a spacecraft is H, the length of air base is B and the parallax difference between two points is dp, then the difference in height
A $${\text{h}} = \frac{{{\text{dp}}}}{{\frac{{\text{B}}}{{\text{H}}}}}$$
B $${\text{h}} = \frac{{\text{B}}}{{\text{H}}} \times {\text{dp}}$$
C $${\text{h}} = \frac{{{\text{dp}}}}{{\frac{{\text{H}}}{{\text{B}}}}}$$
D $${\text{h}} = {\text{BHbp}}$$
The correction for parallax, is
A - 8".8 cos α
B + .8" sin α
C + 8".8 cos α
D - 8".8 cos α
Parallax bar measures
A Parallax
B Height
C Parallax difference
D Height difference
The value of geocentric parallax to be added to the observed altitude of sun is
A 9" cos α
B 9" sin α
C 9" tan α
D 9" cot α
The parallax of a point on the photograph is due to
A Ground elevation
B Flying height
C Length of air base
D All the above
If the elevation of hydraulic grade line at the junction of three pipes is above the elevation of reservoirs B and C and below reservoir A, then the direction of flow will be
A from reservoir A to reservoirs B and C
B from reservoir B to reservoirs C and A
C from reservoir C to reservoirs A and B
D unpredictable
A pole casts a √3 m long shadow on the ground at an elevation 60° ,the height of the pole is-
A ৩মিঃ
B √৩মিঃ
C ৩√৩মিঃ
D ২মিঃ
A pole 6 m high casts a shadow 23 m long on the ground , then the sun's elevation is __
A 60°
B 45°
C 30°
D 90°
A pole 6m high cast a shadow 23m long on the ground, then the Sun's elevation is_____
A 60°
B 45°
C 30°
D 90°
If a pole 6 m high casts a shadow 23 m long on the ground , then the elevation of the sun is -
A 60°
B 45°
C 30°
D 90°

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