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.



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