GATE CE 2022 Set 1 — Question 23
Go beyond PYQs with Success TrackerAI-powered personalised practice and doubt support. Unlimited practice on eligible plans; AI usage limits apply.MCQ+1 / -0.33EasyScale in PhotogrammetryPhotogrammetryGeomatics Engineering
Geomatics Engineering → Photogrammetry → Scale in Photogrammetry
Last updated
Question
An aerial photograph is taken from a flight at a height of 3.5 km above mean sea level, using a camera of focal length 152 mm. If the average ground elevation is 460 m above mean sea level, then the scale of the photograph is
Correct answer
(A) 1: 20000
Solution
The scale of an aerial photograph is given by the formula:where:
= focal length of the camera = 152 mm = 0.152 m
= flight height above mean sea level = 3.5 km = 3500 m
= average ground elevation above mean sea level = 460 m
Substituting the values:So, the scale is 1 : 20000. The correct option is (A).
= focal length of the camera = 152 mm = 0.152 m
= flight height above mean sea level = 3.5 km = 3500 m
= average ground elevation above mean sea level = 460 m
Substituting the values:So, the scale is 1 : 20000. The correct option is (A).
Continue learning with Success Tracker
A step still unclear? Work through it with support
Use Success Tracker to ask about the reasoning, then try another GATE CE question to check your understanding.
AI-powered practice· Unlimited practice on eligible plans
- PYQs with solutions
- Attempt available previous-year questions, then compare your reasoning with the worked solution. Coverage varies by stream.
- Practice that adapts
- Choose a topic, work on weaker areas and bookmark questions to revisit. Your attempts feed your progress tracking.
- AI doubt support
- Ask follow-up questions about a step or concept while practising, instead of stopping at the final answer.
Unlimited practice is available on eligible plans. Free practice and AI usage have limits; check the current plan allowances before choosing.
This page stays readable without an account. AI responses can be wrong; check them against the solution and source material.
More questions on Photogrammetry
2026 Set 1 Q20The Whole Circle Bearing (WCB) of line is . The length of is 100 m. The…2026 Set 2 Q26Which one of the following statements is TRUE with respect to levelling survey?2026 Set 1 Q34A 30 m long tape is standardized at 25 C. It was used to measure the length of a line which…2026 Set 2 Q35A tourist visiting a city holds a map prepared at a scale of . The tourist measures the…2026 Set 1 Q35The height of the plane of collimation of a levelling instrument is 100.000 m from a datum. The…