Assertion: The magnetic flux through a closed surface containing a bar magnet is zero.

Reason: Gauss's law is applied in the case of electric flux only.

Assertion $\left(A\right)$ Flux of magnetic field $\overrightarrow{B}$ through a closed surface is equal to zero $\oint \overrightarrow{B}d\overrightarrow{s}=0$

Reason $\left(R\right)$ magnetic field lines are close curves, they don't have any beginning or end.

We know that the earth behaves as a magnet. Then in what geographic direction does this magnetic field point?

Earth's magnetic field is due to: