Properties Of Solids And Liquids Question 101
Question: Two metal strips that constitute a thermostat must necessarily differ in their [IIT-JEE 1992]
Options:
A) Mass
B) Length
C) Resistivity
D) Coefficient of linear expansion
Show Answer
Answer:
Correct Answer: D
Solution:
Thermostat is used in electric apparatus like refrigerator, Iron etc for automatic cut off.
Therefore for metallic strips to bend on heating their coefficient of linear expansion should be different.
BETA
