A man's eyes 2.5 m above sea level can barely see the top of a lighthouse which is at a certain distance away from the man 1. What is the elevation of the top of the lighthouse in meters (m) above sea level if the lighthouse is 30 km away from the man? 2. How far is the lighthouse from the man in meters (m) if the top of the lighthouse is 25 m above sea level?

Q: The vertical photograph was exposed with a 50 cm focal length camera at a flying height of 5,000…

A: Focal length f=50 cm = 0.50 m, Flying height H=5000 m, Photo scale S=1:2500, To Find- The elevation…

Q: What should be the height (m) of a lighthouse, so that it can be visible from a distance of 3 km?

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Q: A vertical photograph is taken at an altitude of 1200 m 'above mean sea level' (a.m.s.l) of a…

A:

Q: Kyla is on the shore standing close to sea water's edge. She then looks out towards the direction of…

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Instruments for Surveying

Surveying is the practice that determines the relative three-dimensional positions of many different points on the earth’s surface. There are various instruments used in Surveying like Theodolites, Total station, Tripod stands, Plane table, etc. for measuring horizontal angle, vertical and sloping angle, which are very useful for giving accurate and precise measurement.