AP EAMCET · PHYSICS · Magnetic Properties of Matter
The frequncy of vibration in a vibration magnetometer of the combination of two bar magnets of magnetic moments \(M_1\) and \(M_2\) is \(6 \mathrm{~Hz}\) when like poles are tied and it is \(2 \mathrm{~Hz}\) when the unlike poles are tied together, then the ratio \(M_1: M_2\) is
- A \(4: 5\)
- B \(5: 4\)
- C \(1: 3\)
- D \(3: 1\)
Answer & Solution
Correct Answer
(B) \(5: 4\)
Step-by-step Solution
Detailed explanation
In the sum and difference method of vibration magnetometer, \(\frac{M_1}{M_2}=\frac{T_2^2+T_1^2}{T_2^2-T_1^2}\) Here, \(T_1=\frac{1}{n_1}=\frac{1}{6} \mathrm{~s}\) \(T_2=\frac{1}{n_2}=\frac{1}{2} \mathrm{~s}\)…
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