A vertical photograph of a flat area having an average elevation of 250 m above mean sea level was taken with a camera of focal length 25 cm. A section Line AB 300 m long m the area measures 15 cm on the photograph; a tower BP in the area also appears on the photograph. The distance between images of top and bottom of the tower measures 0.5 cm on the photograph. The distance of the Image of the top of the tower is 10 cm. The actual height of the tower is

A vertical photograph of a flat area having an average elevation of 25

1.	A vertical photograph of a flat area having an average elevation of 250 m above mean sea level was taken with a camera of focal length 25 cm. A section Line AB 300 m long m the area measures 15 cm on the photograph; a tower BP in the area also appears on the photograph. The distance between images of top and bottom of the tower measures 0.5 cm on the photograph. The distance of the Image of the top of the tower is 10 cm. The actual height of the tower is
A.	10 m
B.	15 m
C.	20 m
D.	25 m
Answer» E.

Discussion

No Comment Found

Related MCQs

Which instrument lets an operator see two photos at once?
Which photogrammetry method has topographical mapping as a common application?
Which of the following option is true for given statements about photogrammetry?Statement 1: Both aerial and terrestrial photogrammetry used in Urban planning.Statement 2: Terrestrial photogrammetry is more suitable for movement related issues.
What is the type of photograph on which the apparent horizon doesn’t appear?
In a vertical photograph, relief displacement is always radial from the
If net length covered by each photograph is 1.5 km and length of the strip is 18 km, then number of photographs required is
A square area (on the surface of the earth) with side 100 m and uniform height, appears as 1 cm2 on a vertical aerial photograph. The topographic map shows that a contour of 650 m passes through the area. If focal length of camera lens is 150 mm, the height from which the aerial photograph was taken is
A section line AB appears to be 10.16 cm on a photograph for which the focal length is 16 cm. The corresponding line measures 2.54 cm on a map, which is to a scale \(\frac{1}{{50,000}}\). The terrain has an average elevation of 200 m above mean sea level. The flying altitude of the aircraft above mean sea level during photograph will be
Overlap in aerial photography refers to
Aerial photographs are required to be taken to cover an area of 150 km2. The longitudinal and side overlaps are to be 60% and 30% respectively. The scale of photograph is 1 cm = 100 m; and the size of each photograph is 20 cm × 20 cm. The minimum required number of photographs will be

Discussion

No Comment Found

Related MCQs

Reply to Comment