EVERYDAY SCIENCE

Detailed explanation-1: -Vibration magnetometer is used for comparison of magnetic moments and magnetic fields. This device works on the principle, that whenever a freely suspended magnet in a uniform magnetic field, is disturbed from it’s equilibrium position, it starts vibrating about the mean position.

Detailed explanation-2: -To compare magnetic moments of two magnets by vibration magnetometer, ‘sum and difference method’ is better because determination of moment of inertia is not needed which minimizes the errors, less observations are required and less calculations are done.

Detailed explanation-3: -A magnetometer is a passive instrument that measures changes in the Earth’s magnetic field. In ocean exploration, it can be used to survey cultural heritage sites such as ship and aircraft wrecks and to characterize geological features on the seafloor.

Detailed explanation-4: -Explanation of Correct Option: Flux meter is a device which is used to measure the magnetic flux of a permanent magnet. And magnetic flux can be defined as the number of magnetic field lines crossing a given closed surface.

Detailed explanation-5: -A magnetometer measure variation in the earth’s magnetic field and can be used to detect anthropogenic features on the seabed, buried on land or alternatively to assist in the mapping of geological features.