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JAMB Physics 1997 Question 22

Question 22

Gas Laws

Before starting a journey, the tyre pressure of a car was 3 × 105 N m−2 at 27 °C. At the end of the journey, the pressure rose to 4 × 105 N m−2. Calculate the temperature of the tyre after the journey assuming the volume is constant.

  1. A.400 °C
  2. B.300 °C
  3. C.273 °C
  4. D.127 °C
Show the answer and explanation

Answer: D (127 °C)

Explanation

At constant volume P/T is constant (T in kelvin): T2 = 300 × 4/3 = 400 K = 127 °C.