Question

c. At 15 °C the height of Eifel tower is 324
m. If it is made of iron, what will be the
increase in length in cm, at 30°C?​

Answer 1

Answer:

if the temperature is 30°c so the height of efil tower is 648 m

Explanation:

15 °C =324

1°C= 324÷15 = 21.6

so,

30 °C= 21.6 ×15

=648

so, the height of eifel tiwer is 648

Answer 2

Answer:

Height of Eiffel tower = 324 m = 32400 cm at 15°C

Temperature coefficient of linear expansion of iron = 11.5 × 10−6 °C−1

Change in temperature = 30°C − 15°C = 15°C

Change in length = Δl

Using formula for linear expansion of solids, we have

∆l / l = α1∆T

⇒Δl / 32400 = 11.5 × 10−6 × 15

Δl = 32400 × 11.5 × 10−6 × 15 = 5.6 cm