A bar of initial length /0 is heated through a temperature change (Delta)t to a new length I. The linear expansivity, a, of the bar is
-
A.
(frac{/ – /_o}{/ Delta t}) -
B.
(frac{/ – /_o}{/_o Delta t}) -
C.
/o(1 + (Delta) t) -
D.
(frac{/ – /_o}{/(1 + Delta t)})
Correct Answer: Option B
Explanation
(frac{L – L_o}{L_o Delta t})