\(14^0C\)
\(66^0C\)
\(26^0C\)
(\12^0C\)
Correct answer is A
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