NEET Physics Magnetic Effects of Current and Magnetism Time Period Of A Block Suspended Magnet In A Uniform Magnetic Field MCQs

A bar magnet of magnetic moment 'M' is suspended in a uniform magnetic field 'B'. The time period of small oscillations is 'T'. If the magnetic field strength is tripled, the new time period will be:

A bar magnet oscillates with a time period 'T' in a uniform magnetic field. If the magnet is cut into two equal halves perpendicular to its length, the time period of oscillation of each half in the same field will be:

A thin magnetic needle oscillates in a horizontal plane with a period 'T'. If the needle is now made to oscillate in a vertical plane, its period will:

Two identical bar magnets, each of magnetic moment 'M' and moment of inertia 'I', are joined end-to-end to form a single magnet. This combined magnet oscillates in a uniform magnetic field 'B'. What is its time period of oscillation?

A bar magnet is oscillating in a uniform magnetic field 'B'. If the magnet's angular displacement from its equilibrium position is doubled, its time period will:

A bar magnet with moment of inertia 'I' oscillates with a time period 'T' in a uniform magnetic field 'B'. If another magnet with the same moment of inertia but double the magnetic moment is placed in the same field, its time period will be:

A bar magnet of magnetic moment $M$ and moment of inertia $I$ is suspended in a uniform magnetic field $B$. It is slightly displaced from its equilibrium position and executes simple harmonic motion. If an identical magnet is now fixed rigidly to the first magnet, perpendicular to it, and the system is again displaced, the new time period will be:

A thin magnetic needle of length $l$ and magnetic moment $m$ oscillates in a uniform magnetic field $B$ with a period $T$. If the same needle is bent into a semicircular arc, what will be its new period of oscillation in the same magnetic field?

A bar magnet is oscillating in a uniform magnetic field. If the magnet is cut into two equal halves along its length, and one half is oscillated in the same field, the new time period will be:

A bar magnet is suspended in a uniform magnetic field $B$. If it is given a small angular displacement $heta$ and released, it performs simple harmonic motion. If the magnet is replaced by another magnet with double the magnetic moment but the same moment of inertia, the new time period will be: