If the length of rod A is 3.25 `pm` 0.01 cm and that of B is 4.19 `pm` 0.01 cm then the rod B is longer than rod A by

Options

A. `(0.94 pm 0.00)cm`
B. `(0.94 pm 0.01)cm`
C. `(0.94 pm 0.02)cm`
D. `(0.95 pm 0.005 ) cm`

Answer

C

Explanation

Given , length of rod A,
`L_(A) = 3.25 pm0.001`
length of rod `B, L_(B) = 4.19 pm 0.01`
Then , the rod B is longer than rod A by length
`Delta l = L_(B) - L_(A)`
`rArr" "Delta = (4.19 pm 0.01) - (3.25 pm 0.01)`
`Delta = (0.94 pm 0.02) cm`