If declination at a place is known to be $15^{\circ} \,E$. And a compass needle points as shown, then geographic north is represented by the direction numbered.
$1$
$2$
$3$
$4$
If the angles of dip at two places are $30^o$ and $45^o$ respectively, then the ratio of horizontal components of earth's magnetic field at the two places will be
The earth's magnetic field at a certain place has a horizontal component $0.3$ $Gauss$ and the total strength $0.5$ $Gauss$. The angle of dip is
The value of the horizontal component of the earth's magnetic field and angle of dip are $1.8 \times {10^{ - 5}}\,Weber/{m^2}$ and $30°$ respectively at some place. The total intensity of earth's magnetic field at that place will be
A compass needle which is allowed to move in a horizontal plane is taken to a geomagnetic pole. It
The angle of dip at a certain place is $30^o$. If the horizontal component of the earth’s magnetic field is $H, $ the intensity of the total magnetic field is