(a(i))[1]
State the physical property that changes with temperature in a liquid-in-glass thermometer.
(a(ii))[2]
State and explain how the sensitivity of thermometer Y differs from the sensitivity of thermometer X.
(a(iii))[2]
State and explain one change that can be made to the design of thermometer X to increase its range.
(b)[1]
State the physical property that varies with temperature in a thermometer which can measure a temperature of 1300 ^{\circ}C.