A rectangular piece of iron measuring 4 cm by 3 cm at 20\(^o\)C is heated until its temperature increases by 100 C. Calculate the new area of the metal. [Linear expansivity of iron is 1.2x 10\(^{-5}\) K\(^{-1}\)]
a
12.0144 cm\(^3\)
b
12.0346 cm\(^3\)
c
12.0288 cm\(^3\)
d
12.0173 cm\(^3\)
Explanation
Correct Option
cVideo Explanation
No video available
Post your Contribution
Share:
Discussions (2)
Godhild
4 years ago
My school pls make correction to this, u are supposed to times liner expansivity by 2 to get the area expansivity.
C is the right answer 🤝
