Question

Select the INCORRECT statement:

• A. Scale of a tilted photograph is uniform throughout its extent.
• B. The relief displacement of any point will be radial from the nadir point of the tilted photograph.
• C. The bisector of the angle of tilt intersects the tilted photograph at a point known as isocentre.
• D. A line perpendicular to the principal line and passing through the isocentre is known as the axis of tilt.

Hint:

When working with tilted photographs, remember that the scale varies across the image, and is smallest near the edges and largest at the nadir.

Answer 1

The Correct Option is A

In the case of a tilted photograph, the scale is not uniform throughout its extent. The scale varies depending on the distance from the nadir (the point directly below the camera). As the tilt increases, the scale distortion increases, with the scale being smaller near the edges of the photograph and larger near the nadir.
Step 1: Understanding the Concepts
- Option (A) is incorrect because the scale in a tilted photograph is not uniform. It changes depending on the position relative to the nadir.
- Option (B) is correct as the relief displacement, which is the apparent shift in position of a point on a photograph due to tilt, is indeed radial from the nadir point.
- Option (C) is correct since the bisector of the angle of tilt does intersect the tilted photograph at the isocentre, which is the point where the scale is uniform.
- Option (D) is correct as the line perpendicular to the principal line and passing through the isocentre is known as the axis of tilt. Step 2: Conclusion
Therefore, the correct answer is (A), as the scale of a tilted photograph is not uniform.