The angle of dip at a place is `40.6^(@)` and the intensity of the vertical component of the earth's magnetic field `V=6xx10^(-5)` Tesla. The total intensity of the earth's magnetic field `(I)` at this place is

Options

A. `7xx10^(-5)Tesla`
B. `6xx10^(-5)Tesla`
C. `5xx10^(-5)Tesla`
D. `9.2xx10^(-5)Tesla`

Answer

D

Explanation

From the relation `B_(V)= I sin varphi`
`I=V/(sin varphi)=(6xx10^(-5))/(sin 40.6^(@))=(6xx10^(-5))/0.65=9.2xx10^(-5)` tesla