Properties Of Solids And Liquids Question 496
Question: An iron bar of length 10 m is heated from 0°C to 100°C. If the coefficient of linear thermal expansion of iron is 10 ´ 10?6 /°C, the increase in the length of bar is [UPSEAT 2005]
Options:
A) 0.5 cm
B) 1.0 cm
C) 1.5 cm
D) 2.0 cm
Show Answer
Answer:
Correct Answer: B
Solution:
Increase in length DL = L0 a Dq = 10 ´ 10 ´ 10?6 ´ (100 ? 0) = 10?2 m = 1 cm
