A wire has a mass `0.3+-0.003g`, radius `0.5+-0.005mm` and length `6+-0.06cm`. The maximum percentage error in the measurement of its density is

Options

A. `1`
B. `2`
C. `3`
D. `4`

Answer

d

Explanation

`rho = (M)/(pi R^(2)L)`
`(Delta rho)/(rho) xx 100 = [(Delta M)/(M) + 2(Delta R)/(R)+(Delta L)/(L)] xx 100`
`= 4%`