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Q.

The diameter of iron wheel is 1cm. If its temperature is increased by 700°C What is the increase in circumference of the wheel?α=12×10−6/0C

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a

0.0264cm

b

0.264 cm

c

2.64cm

d

26.4 cm

answer is A.

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Detailed Solution

Increase is circumference = πDα∆t where D = diameter of the wheel
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