AP EAMCET20226 Jul 2022Morning ShiftPhysicsMagnetic Properties of MatterActual
A vibration magnetometer is used at two different places A and B on the earth. The time period of a magnet suspended freely in the magnetometer at A is twice that at B . If the horizontal component of the earth's magnetic field at B is 32 10⁻⁶ ~T , then its value at A is
Options
- AH _ A =8 10⁻⁶ ~T
- BH _ A =32 10⁻⁶ ~T
- CH _ A ^ A =4 10⁻⁶ ~T
- DH _ A =16 10⁻⁶ ~T
Correct answer
A. H _ A =8 10⁻⁶ ~T
Step-by-step solution
aligned & T =2 I MB _ H & T 1 B _ H aligned aligned & T _ A = T _ B B _ HB B _ HA B _ HA = ( T _ B T _ A )^2 ~B _ HB & = ( 1 2 )^2 32 10⁻⁶ & =8 10⁻⁶ ~T aligned