Question
Question: There is a metallic rod of length L (at room temperature) and coefficient of linear expansion (a/ŗC)...
There is a metallic rod of length L (at room temperature) and coefficient of linear expansion (a/ŗC). The length of rod at 1ŗC above room temperature is 102 cm and at 2ŗC above room temperature is 104 cm then the values of L and a are –
A
101 cm, 0.02/0C
B
100 cm, 0.01/0C
C
100 cm, 0.02/0C
D
99 cm, 0.02/0C
Answer
100 cm, 0.02/0C
Explanation
Solution
l = L (1 + aDT)
102 = L (1 + a) and 104 = L (1 + 2a)