(D) In the 'sum and difference method' for comparing magnetic moments ($M_1$ and $M_2$) using a vibration magnetometer,the magnets are placed in the s

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(D) In the 'sum and difference method' for comparing magnetic moments ($M_1$ and $M_2$) using a vibration magnetometer,the magnets are placed in the same orientation (sum) and opposite orientation (difference).The ratio is given by $\frac{M_1}{M_2} = \frac{T_2^2 + T_1^2}{T_2^2 - T_1^2}$.This method is advantageous because:$1$. The moment of inertia $(I)$ of the magnets does not need to be calculated,which eliminates errors associated with its determination.$2$. It requires fewer experimental observations compared to other methods.$3$. The mathematical calculations involved are relatively simpler and fewer in number.

Class 12 Physics Magnetism and Matter Magnetic Equipment's (Tangent galvanometer, Vibration magnetometer and Neutral point)

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To compare magnetic moments of two magnets by vibration magnetometer,the 'sum and difference method' is better because:

A
Determination of moment of inertia is not needed,which minimizes the errors.
B
Fewer observations are required.
C
Comparatively fewer calculations are involved.
D
All of the above.

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Magnetism and Matter

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Magnetic Equipment's (Tangent galvanometer, Vibration magnetometer and Neutral point)

$A$ short magnetic needle is pivoted in a uniform magnetic field of induction $1 \text{ T}$. Now, simultaneously another magnetic field of induction $\sqrt{3} \text{ T}$ is applied at right angles to the first field; the needle deflects through an angle $\theta$ whose value is (in $^{\circ}$)

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$A$ thin magnetic iron rod of length $30 \ cm$ is suspended in a uniform magnetic field. Its time period of oscillation is $4 \ s$. It is broken into three equal parts. The time period in seconds of oscillation of one part when suspended in the same magnetic field is

DifficultAP EAMCET 2002

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Two identical bar magnets are placed one above the other such that they are mutually perpendicular and bisect each other. The time period of this combination in a horizontal magnetic field is $T$. The time period of each magnet in the same field is

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The frequency of vibration in a vibration magnetometer of the combination of two bar magnets of magnetic moments $M_1$ and $M_2$ is $6 \ Hz$ when like poles are tied together and it is $2 \ Hz$ when the unlike poles are tied together, then the ratio $M_1: M_2$ is

DifficultAP EAMCET 2010

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The period of oscillation of a magnet of a vibration magnetometer is $2.45 \,s$ at one place and $4.9 \,s$ at the other. The ratio of the horizontal component of earth's magnetic field at the two places is .........

Medium

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To compare magnetic moments of two magnets by vibration magnetometer,the 'sum and difference method' is better because:

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$A$ short magnetic needle is pivoted in a uniform magnetic field of induction $1 \text{ T}$. Now, simultaneously another magnetic field of induction $\sqrt{3} \text{ T}$ is applied at right angles to the first field; the needle deflects through an angle $\theta$ whose value is (in $^{\circ}$)

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