four choices have been provided. Select the correct alternative. D. A copper wire is bent as sho...

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four choices have
been provided. Select the correct alternative.
D.
A copper wire is bent as shown in the figure.
When its temperature is increased, the distance between \( \mathrm{A} \) and \( \mathrm{B} \)
(a) decreases
(b) increases
(c) remains same
(d) increases or decreases depending up on its initial temperature.
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