A magnet makes 5 oscillations per minute in `H=0.3times10^(-1) T`.By what amount the field should be increased so that the number of oscillations is 10 in the same time?

A magnet of magnetic moment M oscillating freely in earth's horizontal magnetic field makes n oscillations per minute. If the magnetic moment is quadrupled and the earth's field is doubled, the number of oscillations mode per minute would be

A magnet makes 10 oscilllations per minute at a place where the angle of dip is 45^(@) and the total intensity is 0.4 gauss. The number of oscillations made per sec by the same magnet at another place where the angle of dip is 60^(@) and the total intensity 0.5 gauss is approximately.

The combination of two bar magnets makes 20 oscillations per minute in an oscillation magnetometer when like poles are tied together and 5 oscillations per minute when unlike poles are kept together. Then ratio of the magnetic moment of magnets is

The magnetic needle of an oscillation magnetometer makes 10 oscillations per minut under the action of earth's magnetic field along. When a bar magnet is placed at some distance along the axis of the needle it makes 14 oscillations per minute. If the bar magnet is turned so that its poles interchange their position, then the new frequency of oscillation of the needle is:

The magnetic needle of a vibration magnetometer makes 12 oscillations per minute in the horizontal component of earth's magnetic field. When an external short bar magnet is placed at some distance along the axis of the needle in the same line it makes 15 oscillations per minute. If the poles of the bar magnet are inter changed, the number of oscillations it takes per minute is

A magnet makes 40 oscillations per minute at a place having magnetic field of 0.1 xx 10^(-5) T . At another place, " it take 2.5 s to complete one vibration. If the value of the earth's horizontal field at that place is y xx 10^(-6) T . then find y .

At a certain place, a magnet makes 30 oscillations per minute. At another place, the magnetic field is double. What is the its time period ?