City Guilds Model Questions Vol1 2020 Engineering Question 48
Practice objective / multiple choice question 48 from the 2020 City Guilds Model Questions Vol1 Engineering examination.
The height of a building is estimated by the shadow‑method at two different times. At the first observation the shadow length is \(30.0\) m and the solar elevation angle is measured as \(45^{\circ}\). Two hours later the shadow length is \(20.0\) m and the solar elevation angle is \(60^{\circ}\). Assuming the building height is constant, (a) compute the two independent height estimates, (b) find the average height, and (c) determine the percentage difference between the two estimates. Give the average height to one decimal place and the percentage difference to one decimal place.
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About This Question
This is City Guilds Model Questions Vol1 2020 Engineering Question 48. It is one of the objective questions from the 2020 City Guilds Model Questions Vol1 Engineering examination.
Difficulty level: Hard .
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