- 1(current)
Q. No.Among which of the following the magnetic susceptibility does not depend on the temperature:
1. Diamagnetism
2. Paramagnetism
3. Ferromagnetism
4. Ferrite
Diamagnetic material in a magnetic field moves:
| 1. | from stronger to the weaker parts of the field |
| 2. | from weaker to the stronger parts of the field |
| 3. | perpendicular to the field |
| 4. | in none of the above directions |
If the magnetic dipole moment of an atom of diamagnetic material, paramagnetic material and ferromagnetic material are denoted by \(\mu_d,~\mu_p,~\text{and}~\mu_f\) respectively, then:
1. \(\mu_p= 0 ~\text{and}~\mu_f \ne0\)
2. \(\mu_d\neq 0 ~\text{and}~\mu_p=0\)
3. \(\mu_d\ne 0 ~\text{and}~\mu_f \ne0\)
4. \(\mu_d= 0 ~\text{and}~\mu_p \ne0\)
| 1. | motion remains SHM with time period = \(\frac{T}{2}\) |
| 2. | motion remains SHM with time period = \(2T\) |
| 3. | motion remains SHM with time period = \(4T\) |
| 4. | motion remains SHM with time and period remains nearly constant |
Two bar magnets having the same geometry with magnetic moments \(M\) and \(2M\) are firstly placed in such a way that if their similar poles are on the same side then their time period of oscillation is \(T_1\). Now if the polarity of one of the magnets is reversed then the time period of oscillation is \(T_2\). The relation between \(T_1\) & \(T_2\) is:
1. \(T_1<T_2\)
2. \(T_1=T_2\)
3. \(T_1>T_2\)
4. \(T_2 = \infty\)
For a vibration magnetometer, the time period of the suspended bar magnet can be reduced by:
1. moving it towards the south pole
2. moving it towards the north pole
3. moving it towards the equator
4. anyone of them
For protecting a magnetic needle, it should be placed:
| 1. | In an iron box. |
| 2. | In a wooden box. |
| 3. | In a metallic box. |
| 4. | None of these. |
- 1(current)
Q. No.
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