Question

Bimetallic strip made up of two different
metals joined together works on the
principle of
(A) Unequal expansion of solids
(B) Unequal contraction of solids
(C) Equal expansion of solids
D) Both (A) and (B).
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Answer 1

Answer:

answer is option c

Explanation:

A bimetallic strip works on the principle of thermal expansion, which is defined as the change in volume of metal with the change in temperature. The bimetallic strip works on two basic fundamentals of metals.

Answer 2

Answer:

option d

Explanation:

the principle involved in bimetallic strip is unequal expansion or contraction of different materials  on heating or  cooling

NSO ANSWER