A wire of length 60 cm is bent into a circle with a gap of 1 cm. At it

1.	A wire of length 60 cm is bent into a circle with a gap of 1 cm. At its ends, on heating it by 100 ∘C, the length of the gap increases to 1)02 cm. α of material of wire is 1) 2×10^-42)4×10^-43)6×10^-44)1×10^-4
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A wire of length 60 cm is bent into a circle with a gap of 1 cm. At its ends, on heating it by 100 ∘C, the length of the gap increases to 1)02 cm. α of material of wire is 1) 2×10^-42)4×10^-43)6×10^-44)1×10^-4

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OPTION NUMBER 4

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A wire of length 60 cm is bent into a circle with a gap of 1 cm. At its ends, on heating it by 100 ∘C, the length of the gap increases to 1)02 cm. α of material of wire is 1) 2×10^-42)4×10^-43)6×10^-44)1×10^-4

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