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JAMB Physics 1984 Question 37

Question 37

Pressure

Normal atmospheric pressure at sea-level is 105 N m−2 and the acceleration due to gravity is approximately 10 m s−2. If the atmosphere has a uniform density of 1 kg m−3, its height is

  1. A.100 m
  2. B.1000 m
  3. C.10000 m
  4. D.100 000 m
  5. E.1000 000 m
Show the answer and explanation

Answer: C (10000 m)

Explanation

p = hρg, so h = 105/(1 × 10) = 104 m = 10 000 m.