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Two metal strips that constitue a thermo...

Two metal strips that constitue a thermostat must necessarily differ in their

A

Mass

B

Length

C

Resistivity

D

Coefficient of linear expansion

Text Solution

Verified by Experts

The correct Answer is:
D
Thermost 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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