At an angle of $30^{\circ}$ to the magnetic meridian, the apparent dip is $45^{\circ} .$ Find the true dip :
$\tan ^{-1} \frac{1}{\sqrt{3}}$
$\tan ^{-1} \frac{\sqrt{3}}{2}$
$\tan ^{-1} \sqrt{3}$
$\tan ^{-1} \frac{2}{\sqrt{3}}$
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......$^o$
What are the Earth magnetic elements defined ? And which are they ?
In the magnetic meridian of a certain place, the horizontal component of the earth’s magnetic field is $0.26\;G$ and the dip angle is $60^o$. What is the magnetic field of the earth at this location?
How many neutral points will be obtained when a bar magnet is kept with magnetic moment parallel to earth's magnetic field?
A bar magnet is situated on a table along east-west direction in the magnetic field of earth. The number of neutral points, where the magnetic field is zero, are