A magnetic needle free to rotate in a vertical plane parallel to magnetic meridian has its north tip down at `60^@` with the horizontal. The horizontal component of earth's magnetic field at that place is `0*4G`. Determine the magnitude of earth's magnetic field at the place.

A magnetic needle free to rotate in a vertical plane parallel to the magnetic meridian has its north tip down 60^@ with the horizotnal. The horizontal component of earth's magnetic field at the place is 0*4G . Determine the magnitude of earth's magnetic field at the place.

A magnetic needle free to rotate in a vertical plane parallel to the magnetic meridian has its north tip down at 60^@ with the horizontal. The horizontal component of the earth's magnetic field at the place is known to be 0.4G. Determine the magnitude of the earth's magnetic field at the place.

A magnetic needle free to rotate in a vertical plane parallel to the magnetic meridian has its north tip down at 60^(@) with the horizontal.The horizontal component of the earth's magnetic field at the place is known to be 0.4G .Determine the magnitude of the earth's magnetic field at the place.

A magnetic needle free to rotate in a vertical plane parallel to the magnetic meridian has its north tip down at 60^(@) with the horizontal.The horizontal component of the earth's magnetic field at the place is known to be 0.4G .Determine the magnitude of the earth's magnetic field at the place.

A magnetic needle free to rotate in a vertical plane parallel to the magnetic meridian has its north tip pointing down at 60^@ with the horizontal. The horizontal component of the earth's magnetic field at the place is known to be 0.4 G. Determine the magnitude of the earth's magnetic field at the place.

A magnetic needle free to rotate in a vertical plane parallel to the magnetic meridian has its north tip pointing down at 22^@ with the horizontal . The horizontal component of the earth's magnetic field at the place is known to be 0.35 G . Determine the magnitude of the earth's magnetic field at the place.

A magnetic needle free to rotate in a vertical plane parallel to the magnetic meridian has its north tip pointing down at 22^(@) with the horizontal. The horizontal component of the earth's magnetic field at the place is known to be 0.35 G. Determine the magnitude of the earth's magnetic field at the place.

A magnetic needle free to rotate in a vertical plane parallel to the magnetic meridian has its north tip pointing down at 22^@ with the horizontal. The horizontal component of the earth’s magnetic field at the place is known to be 0.35 G. Determine the magnitude of the earth’s magnetic field at the place.