Magnetism and M...

At magnetic poles of earth, angle of dip is

The correct relation is
[Where B_H = Horizontal component of earth\'s magnetic field; B_V = Vertical component of earth\'s magnetic field and B = Total intensity of earth\'s magnetic field]

The vertical component of earth\'s magnetic field is zero at or the earth\'s magnetic field always has a vertical component except at the

The lines of force due to earth\'s horizontal component of magnetic field are

If the angles of dip at two places are 30° and 45° respectively, then the ratio of horizontal components of earth\'s magnetic field at the two places will be

A bar magnet is 10 cm long, and is kept with its north (N)– pole pointing north. A neutral point is formed at a distance of 15 cm from each pole. Given the horizontal component of earth\'s field to be 0.4 gauss, the pole strength of the magnet is

The angle of dip at a place is 40.6° and the intensity of the vertical component of the earth\'s magnetic field V = 6 × 10^–5 tesla. The total intensity of the earth\'s megnetic field (I) at this place is

If magnetic lines of force are drawn by keeping magnet vertical, then number of neutral points will be

At the magnetic poles of the earth, a compass needle will be

The angle of dip at the magnetic equator is