Sagging of electric wires in summers is because of: – McqOptions

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1.	Sagging of electric wires in summers is because of:
A.	Contraction of metals on heating.
B.	Expansion of metals on heating.
C.	Metals remain same on heating.
D.	Metals change their colour on heating.
E.	None of these
Answer» C. Metals remain same on heating.

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