figures shows the expansion of a `2`m long metal rod with temperature . The volume expansion coefficient the
metal is :-

Options

A. `3xx 10 ^(-4)K^(-1)`
B. `1.5 xx 10^(-4) K_(-1)`
C. `3 xx 10^(-5) K^(-1)`
D. `1.5 xx 10 ^(-5)K^(-1)`

Answer

B

Explanation

`because = (Deltal)/(lDeltaT) = (0.5 xx 10^(-3))/(2(5)) = 5 xx 10^(-5) K^(-1) implies gamma = 3alpha = 1.5 xx 10 ^(-4) K^(-1)`