A compass needle will show which one of the following directions at the earth's magnetic pole

At a certain place the angle of dip is $30^{\circ}$ and the horizontal component of earth's magnetic field is $0.5 G$. The earth's total magnetic field (in $G$ ), at that certain place, is ................

The horizontal component of the earth's magnetic field at any place is $0.36 \times 10^{-4} Wb / m ^{2}$. If the angle of dip at that place is $60^{\circ}$, then the value of vertical component of the earth's magnetic field will be ........ $\times 10^{-4}\;W b / m^{2}$

A compass needle whose magnetic moment is $60 \,amp × m^2$ pointing geographical north at a certain place, where the horizontal component of earth's magnetic field is $40\, \mu Wb/m^2$, experiences a torque $1.2 \times {10^{ - 3}}\,N \times m.$ What is the declination at this place......$^o$

At a place, the horizontal and vertical intensities of earth's magnetic field is $0.30$ Gauss and $0.173$  Gauss respectively. The angle of dip at this place is.....$^o$

Give information about Earth’s magnetism.