SSC (English Medium) Class 8Maharashtra State Board
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# Solve the Following Example - SSC (English Medium) Class 8 - Science

#### Question

Solve the following example.

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

#### Solution

Height of Eifel tower = 324 m = 32400 cm at 15C

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

Change in temperature = 30C - 15 C = 15C

Change in length = Δ l

Using formula for linear expansion of solids, we have

(triangle l)/l = α_l triangle "T"

=> (triangle l)/32400 = 11.5 xx 10^(-6) xx 15

triangle l = 32400 xx 11.5 xx 10^(-6) xx 15 = 5.6 "cm"

Is there an error in this question or solution?

#### APPEARS IN

Balbharati Solution for Balbharati Class 8 Science - General Science (2018 to Current)
Chapter 14: Measurement and Effects of Heat
Exercise | Q: 4.3 | Page no. 103
Solution Solve the Following Example Concept: Sources of Heat.
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