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JAMB Physics 2013 Question 16

Question 16

Temperature and Thermometers

Calculate the length which corresponds to a temperature of 20°C if the ice and steam points of an ungraduated thermometer are 400 mm apart.

  1. A.20mm.
  2. B.30mm.
  3. C.60mm.
  4. D.80mm.
Show the answer and explanation

Answer: D (80mm.)

Explanation

100°C corresponds to 400 mm, so 1°C is 4 mm and 20°C is 20 × 4 = 80 mm above the ice point.