1. | equal pole strength |
2. | magnetic moment \(\frac{M}{4}\) |
3. | magnetic moment \(\frac{M}{2}\) |
4. | magnetic moment \(M\) |
A magnet of magnetic moment is placed along the x-axis in a magnetic field . The torque acting on the magnet is
1. 175 N-m
2. 150
3. 75 N-m
4. 25 N-m
1. Intersect at the neutral point
2. Intersect near the poles of the magnet
3. Intersect on the equatorial axis of the magnet
4. Do not intersect at all
The magnetic field lines due to a bar magnet are correctly shown in
1.
2.
3.
4. None of these
A bar magnet of length 3 cm has points A and B along its axis at distances of 24 cm and 48 cm on the opposite sides. Ratio of magnetic fields at these points will be
1. 8 2.
3. 3 4. 4
A dip needle in a plane perpendicular to magnetic meridian will remain
1. Vertical
2. Horizontal
3. In any direction
4. At an angle of dip to the horizontal
If the angles of dip at two places are 30o and 45o respectively, then the ratio of horizontal components of earth's magnetic field at the two places will be:
(Assume net magnetic field to be equal at the two places)
1. √3 : √2
2. 1 : √2
3. 1 : √3
4. 1 : 2
A line passing through places having zero value of magnetic dip is called
1. Isoclinic line
2. Agonic line
3. Isogonic line
4. Aclinic line
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
1.
2.
3.
4.
At a certain place, the horizontal component B0 and the vertical component V0 of the earth's magnetic field are equal in magnitude. The total intensity at the place will be
1. 2.
3. 4.