A metal rod of length 100cm is heated through 100°C, calculate the change in length of the rod [linear expansivity of the material of the rod is 3 x 10^-6K-1]

By: |Published on: May 21|Categories: Physics WAEC| 0 comments

A. 4mm
B. 3mm
C. 2mm
D. 1mm

Correct Answer: Option B

B. 3mm

Explanation

I2−I1=I1, θα−1×100×3×10^−5

= 3 x 10-3m

= 3mm

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