Practice Scale Of A Vertical Photograph (4.9) - Photogrammetry Surveying

Practice: Scale of a Vertical Photograph

Lesson 4.9Photogrammetry Surveying

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9 questions

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3 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is the scale of a vertical photograph if the distance between two objects on the ground is 200m and the distance on the photograph is 2m?
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Use the formula S = ab / AB.
Question 2.
If a camera has a focal length of 50mm and the height is 200m, what is the scale?
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Apply the formula S = f / H.
3Question 3.
What is the formula for calculating the scale of a vertical photograph?
- S = f/H
- S = AB/ab
- S = f/(H - h)
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Consider how focal length and height interplay in scale determination.
4Question 4.
True or False: The scale of a photograph remains the same irrespective of the elevation of objects.
- True
- False
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Recall how scale changes with varied elevations.
Question 5.
You have a vertical photograph taken from an altitude of 1200m with a focal length of 75mm. Calculate the scale. If an object on the ground was measured to be 15m in reality, what would be its size on the photograph?
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Apply the formula for scale and convert distances as needed.
Question 6.
Analyze a scenario where the flying height changes from 800m to 1200m with the same focal length of 100mm. Explain how this impacts the scale and why.
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Consider the relationships presented about scale and flight height.

5 more questions in this section. Enroll free to practise them all.