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JAMB Physics 2000 Question 21

Question 21

Temperature and Thermometers

The diagram above shows a maximum and minimum thermometer divided into three portions P, Q and R. Which of the following is true about the respective contents of P, Q and R?

Diagram for this question
  1. A.Alcohol, mercury and alcohol
  2. B.Air, alcohol and mercury
  3. C.Mercury, alcohol and mercury
  4. D.Air, mercury and alcohol.
Show the answer and explanation

Answer: A (Alcohol, mercury and alcohol)

Explanation

In Six's maximum and minimum thermometer the bulb P is full of alcohol, the U-bend Q holds a thread of mercury, and above the mercury on the other side R is alcohol again.