Question

Two bars of copper having
same length but unequal
diameter are heated to the
same temperature. The
change in length will be-
More in thinner bar
More in thicker bar
Same for both the bars
Determined by the ratio of
length and diameter of the bars​

Answer 1

Answer:

it will same for both bar

Answer 2

Answer:

Both copper bars leads to same change in length, if both the rods are heated at same temperature .

Explanation:

 ΔΘ = difference in the temperature

 ΔL = change in length of bars

 L= length (same for both bars)

  $\alpha =temperature$ coefficient

The change in length   ΔL = Lα ΔΘ

Now, because the temperature is same for both copper bars ΔΘ=0

     ∴           ΔL =0

Therefore, for both copper bars have same change in length .