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What is the temperature around an aeroplane flying at an altitude of 4000metres if the...

Geography
JAMB 2023

What is the temperature around an aeroplane flying at an altitude of 4000metres if the temperature on the earth's surface is \(40ºc\)?

  • A. \(14^0C\)
  • B. \(66^0C\)
  • C. \(26^0C\)
  • D. (\12^0C\)
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Correct Answer: Option A
Explanation

Lapse rate is simply described as 0.65°C per 100m of ascent or 6.5ºC per 1000m of ascent.
Therefore 4000m of ascent= 6.5ºC x 4000m/1000m=26.0ºC
Then, the temperature around the aeroplane is = 40ºC - 26ºC = 14°C

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