The design of the thermostat of an electric iron is based on the
A
emmision of electrons from metals when heated
B
increase in size of metals when heated
C
increase in the density of metals when heated
D
change in the mass of metals when heated
Verified Correct Answer: B.
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Myschool Past Questions Archive (Record #35035)