GATE 2025 AR — Planning – Question 47
A 24 cm vertical line stands on the ground. Station point is 18 cm high and 15 cm horizontally in front of the line. A perpendicular picture plane lies 9 cm from the station between viewer and line. Find perspective line height in cm, to one decimal.
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Show answer and explanation
Correct answer: 14.2 to 14.6
Explanation
Perspective projection scales vertical differences by picture-plane distance/object-plane distance=9/15. Image height is 24×9/15=14.4 cm. The 18 cm eye height shifts the image’s vertical position but does not change its total projected height.