## Question

A thin copper wire of length *L* increases its length by 1% when heated from temperature *T*_{1} to *T*_{2}. What is the percentage change in area when a thin copper plate having dimensions is heated from *T*_{1} to*T*_{2}?

### Solution

2%

Length of wire at temperature *T*_{2} is

Therefore,

Thus the area increases by **2%**.

#### SIMILAR QUESTIONS

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