3 m long copper wire is stretched to increase its length by 0.3 cm. The lateral strain produced in the wire is,

Options

A. `0.26xx10^(-2)`
B. `0.26xx10^(-3)`
C. `0.26 xx10^(-4)`
D. `0.26xx10^(-5)`

Answer

B

Explanation

`sigma=("Lateral strain")/("Longitudinal strain")`
`therefore " Lateral strain"=sigma xx "Longitudinal strain" `
`=0.26 xx (0.3)/(300) = 0.26 xx 10^(-3)`