Question
Question: The diameters of steel rods A and B having the same length are 2 cm and 4 cm respectively. They are ...
The diameters of steel rods A and B having the same length are 2 cm and 4 cm respectively. They are heated through 100°C. What is the ratio of increase of length of A to that of B.
A
1 : 2
B
2 : 1
C
1 : 1
D
4 : 1
Answer
1 : 1
Explanation
Solution
DL = LI µ D t