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JAMB Physics 1983 Question 35

Question 35

Temperature and Thermometers

A short response time is obtained in liquid-in-glass thermometer when the

  1. A.bulb is large and thick-walled
  2. B.stem is long and thin
  3. C.bulb is small and thick-walled
  4. D.liquid is of high density and the bore is large
  5. E.bulb is thin-walled and the liquid is a good conductor of heat.
Show the answer and explanation

Answer: E (bulb is thin-walled and the liquid is a good conductor of heat.)

Explanation

Heat passes quickly through a thin glass wall, and a liquid that conducts well soon reaches the temperature being measured, so the reading responds fast.