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A rod of length 10cm is heated through 100^oC and ...

A rod of length 10cm is heated through 100^oC and its final length is 10.26cm. What is the co-efficient of linear expansion of the rod?

A.

0.026 per degree centigrade

B.

0.00026 per degree centigrade

C.

0.26 per degree centigrade

D.

1.0026 per degree centigrade

E.

0.0026 per degree centigrade

View answer & explanation

Correct answer is B

\(\alpha\) = \(\frac{L_2 - L_1}{L_1 \times \theta}\)

= \(\frac{10 - 26 - 10}{10 \times 100}\)

= 2.6 x 10^-4^oC

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