Question 4
Boojho has three thermometers as shown in Figure. He wants to measure the temperature of his body and that of boiling water. Which thermometer(s) should he choose?
(a) Thermometer (i) or (iii) for measuring body temperature and Thermometer (ii) for measuring the temperature of boiling water.
(b) Thermometer (i) for measuring temperature of both.
(c) Thermometer (ii) for measuring temperature of both.
(d) Thermometer (iii) for measuring temperature of both.
Why does the thermometer used to measure body temperature have a long rather than a round bulb?