A bar magnet having centre `O` has a length of `4 cm`. Point `P_(1)` is in the broad side-on and `P_(2)` is in the end side-on position with `OP_(1)=OP_(2)=10 metres`. The ratio of magnetic intensities `H` at `P_(1)` and `P_(2)` is

If P-=(1,2,3) then direction cosines of OP are

The ratio of magnetic fields due to a bar magnet at the two axial points P_(1) and P_(2) which are separated from each other by 10 cm is 25 :2 . Point P_(1) is situated at 10 cm from the centre of the magnet. Magnetic length of the bar magnet is (Points P_(1) and P_(2) are on the same side of magnet and distance of P_(2) from the centre is greater than distance of P_(1) from the centre of magnet)

The ratio of magnetic fields due to a bar magnet at the two axial points P_(1) and P_(2) which are separated from each other by 10 cm is 25 :2 . Point P_(1) is situated at 10 cm from the centre of the magnet. Magnetic length of the bar magnet is (Points P_(1) and P_(2) are on the same side of magnet and distance of P_(2) from the centre is greater than distance of P_(1) from the centre of magnet)

The ratio of magnetic fields due to a bar magnet at the two axial points P_(1) and P_(2) which are separated from each other by 10 cm is 25 :2 . Point P_(1) is situated at 10 cm from the centre of the magnet. Magnetic length of the bar magnet is (Points P_(1) and P_(2) are on the same side of magnet and distance of P_(2) from the centre is greater than distance of P_(1) from the centre of magnet)

The ratio of magnetic intensities at points at equal distance on end - on position and broad -side -on position of a short bar magnet is

If O is the origin and P = (1, -2, 1) and OP bot OQ , then Q =

If P be any point on the plane ln+my+nz=P and Q be a point on the line OP such that (OP)(OQ)=P^(2). The locus of point Q is

If P is any point on the plane lx+my+nz=p and Q is a point on the line OP such that OP.OQ=p^(2), then find the locus of the point Q.