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A rod of length 10cm is heated through 100oC and its final length is 10.26cm....

Physics
JAMB 1982
A rod of length 10cm is heated through 100oC 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
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Correct Answer: Option B
Explanation
\(\alpha\) = \(\frac{L_2 - L_1}{L_1 \times \theta}\)

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

= 2.6 x 10-4oC
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