Properties Of Solids And Liquids Question 494
A metal rod of silver at 0°C is heated to 100°C. Its length is increased by 0.19 cm. Coefficient of cubical expansion of the silver rod is [UPSEAT 2001]
Options:
A) 5.7 × 10⁻⁵/°C
B) 0.63 × 10⁻⁵/°C
C) 1.9 × 10⁻⁵/°C
D) 16.1 × 10⁻⁵/°C
Show Answer
Answer:
Correct Answer: A
Solution:
$ \alpha =\frac{\Delta L}{L _{0} \Delta \theta } $
$ =\frac{0.19}{100(100-0)}=1.9\times {{10}^{-5}}/{}^\circ C $
Now g = 3a = 3 ´ 1.9 ´ 10^-5/°C = 5.7 ´ 10^-5/°C
BETA
