Home
Class 12
PHYSICS
Two short magnets have equal to pole str...

Two short magnets have equal to pole strength but one is twice as long as the other. The shorter magnet is placed 20 cm in tan A position from the compass needle. The longer magnet must be placed on the other side of the magnetometer for no deflection at a distance equal to:

A

`20(2) ^(1//3) cm`

B

`20(2)^(2//3)cm`

C

`40 cm`

D

`20 cm`

Text Solution

Verified by Experts

`(M_(1))/(d_(1)^(3))= (M_(2))/(d _(2) ^(3))and M _(2) = 2 M _(1)`
Promotional Banner

Similar Questions

Explore conceptually related problems

Two short bar magnets have equal pole stengths but one is twice as long as the other one . The short magnet is placed at a distance of 30 cm in tan A position form the compass needle . The longer magnet must be placed on the other side of the compass needle for no deflection at a distance of .

A long bar magnet has a pole strength of 10 Am . Find the magnetic field at a point on the axis of the magnet at a distance of 5cm from the north pole of the magnet.

A short magnet produces a dfection of 30^(@) when placed at certain distance in tanA position of magnetometer. If another short magnet of double the length and thrice the pole strength is placed at the same distance in tabB position of the magnetometer, the deflection produced will be

A short magnet porduces a deflection of 30^(@) when placed at certain distance in tanA position of magnetometer. If another short magnet of double the length and thrice the pole strength is placed at the same distance in tan B position of the magnetometer, the deflection produced will be-

The magnetometer of the previous problem is used with the same magent in Tan-B position. Where should the magnet be placed to produce a 37^@ deflection of the needle?

A short bar magnet is placed with its north pole pointin north. The neutral point is 10 cm away from the centre of the magnet. If H=0.4G , calculate the magnetic moment of the magnet.

Two small magnets are placed horizontally perpendicular to magnetic meridian. Their north poles are at 30cm east and 20cm west from a compass needle. Compare the magnetic moments of the magnets, if compass needle remains undeflected.

Two short magnet having magnetic moment in the ratio 27:8 , when placed on the opposite sides of a deflection magnetometer, produce no deflection. If the distance of the weaker magnet is 0.12m from the centre of deflection magnetometer, the distance of the stronger magnet from the centre is

Two short magnets having magnetic moments in the ratio 27:8 , when placed on opposite sides of a deflection magnetometer produce no deflection. If the distance of weaker magnet is 0*12m from the centre of deflection magnometer, what is the distance of stronger magnet from the centre?