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In a vibration magnetometer, if two magnets are positioned such that their like poles face the same direction, what will be the resulting magnetic moment?

1. T₂ = 2π√((I₁ + I₂)/(M + 2M)H) = 2π√(I/3MH)
2. The iron enclosure can block magnetic field lines, preventing them from passing through.
3. When two magnets are aligned with like poles in the same direction, the combined magnetic moment becomes M₁ + M₂.
4. If two magnets are placed with opposite poles facing each other, the net magnetic moment is given by M₁ − M₂.

Correct answer: When two magnets are aligned with like poles in the same direction, the combined magnetic moment becomes M₁ + M₂.

Solution

When two magnets are placed with identical poles in the same direction, their magnetic moments add up, resulting in a net magnetic moment M₁ = M₁ + M₂. This is a direct application of the principle of vector addition of magnetic moments.

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