154279
The soft- iron is a suitable material for making an electromagnet. This is because soft-iron has
1 low coercivity and high retentivity.
2 low coercivity and low permeability.
3 high permeability and low retentivity.
4 high permeability and high retentivity.
Explanation:
C Electromagnet are made of soft iron because soft iron has low retentivily and the soft iron has high permeability because magnetization is large even for a small magnetizing field.
JEE Main-24.06.2022
Magnetism and Matter
154282
The value of magnetic susceptibility $\chi$ of a paramagnetic sample can be represented by $(\Delta$ being a small quantity)
1 $-\Delta \lt \chi \lt 0$
2 $0 \lt \chi \lt \Delta$
3 $1 \lt \chi \lt 1+\Delta$
4 $1-\Delta \lt \chi \lt 1$
Explanation:
B For paramagnetic substance the susceptibility will be $(0 \lt \chi \lt \Delta)$ Where, $\Delta$ is a small quantity.
Tripura-2021
Magnetism and Matter
154283
When a piece of a magnetic substance is put in a uniform magnetic field, the flux density inside it is four times the flux density away from the piece. The magnetic permeability of the material is
1 1
2 2
3 3
4 4
Explanation:
D When a piece of a ferromagnetic substance is put in a uniform magnetic field. The flux density inside it is 4 time flux density away from the piece. $\therefore \text { Magnetic permeability }\left(\mu_{\mathrm{r}}\right)=\frac{\mathrm{B}_{0}}{\mathrm{~B}_{0}}=\frac{4 \mathrm{~B}_{0}}{\mathrm{~B}_{0}}=4$
AP EAMCET-24.08.2021
Magnetism and Matter
154286
Which one of the following characteristics is not associated with a paramagnetic material?
1 It is weakly magnetised in the direction of the magnetising field, in which it is placed
2 Its magnetic permeability is greater than one
3 Its magnetic susceptibility is positive
4 Its magnetic susceptibility increases with rise in temperature
5 Its individual atom/molecule/ion has a net non-zero magnetic moment of its own
Explanation:
D Its magnetic susceptibility increases with rise in temperature.
154279
The soft- iron is a suitable material for making an electromagnet. This is because soft-iron has
1 low coercivity and high retentivity.
2 low coercivity and low permeability.
3 high permeability and low retentivity.
4 high permeability and high retentivity.
Explanation:
C Electromagnet are made of soft iron because soft iron has low retentivily and the soft iron has high permeability because magnetization is large even for a small magnetizing field.
JEE Main-24.06.2022
Magnetism and Matter
154282
The value of magnetic susceptibility $\chi$ of a paramagnetic sample can be represented by $(\Delta$ being a small quantity)
1 $-\Delta \lt \chi \lt 0$
2 $0 \lt \chi \lt \Delta$
3 $1 \lt \chi \lt 1+\Delta$
4 $1-\Delta \lt \chi \lt 1$
Explanation:
B For paramagnetic substance the susceptibility will be $(0 \lt \chi \lt \Delta)$ Where, $\Delta$ is a small quantity.
Tripura-2021
Magnetism and Matter
154283
When a piece of a magnetic substance is put in a uniform magnetic field, the flux density inside it is four times the flux density away from the piece. The magnetic permeability of the material is
1 1
2 2
3 3
4 4
Explanation:
D When a piece of a ferromagnetic substance is put in a uniform magnetic field. The flux density inside it is 4 time flux density away from the piece. $\therefore \text { Magnetic permeability }\left(\mu_{\mathrm{r}}\right)=\frac{\mathrm{B}_{0}}{\mathrm{~B}_{0}}=\frac{4 \mathrm{~B}_{0}}{\mathrm{~B}_{0}}=4$
AP EAMCET-24.08.2021
Magnetism and Matter
154286
Which one of the following characteristics is not associated with a paramagnetic material?
1 It is weakly magnetised in the direction of the magnetising field, in which it is placed
2 Its magnetic permeability is greater than one
3 Its magnetic susceptibility is positive
4 Its magnetic susceptibility increases with rise in temperature
5 Its individual atom/molecule/ion has a net non-zero magnetic moment of its own
Explanation:
D Its magnetic susceptibility increases with rise in temperature.
154279
The soft- iron is a suitable material for making an electromagnet. This is because soft-iron has
1 low coercivity and high retentivity.
2 low coercivity and low permeability.
3 high permeability and low retentivity.
4 high permeability and high retentivity.
Explanation:
C Electromagnet are made of soft iron because soft iron has low retentivily and the soft iron has high permeability because magnetization is large even for a small magnetizing field.
JEE Main-24.06.2022
Magnetism and Matter
154282
The value of magnetic susceptibility $\chi$ of a paramagnetic sample can be represented by $(\Delta$ being a small quantity)
1 $-\Delta \lt \chi \lt 0$
2 $0 \lt \chi \lt \Delta$
3 $1 \lt \chi \lt 1+\Delta$
4 $1-\Delta \lt \chi \lt 1$
Explanation:
B For paramagnetic substance the susceptibility will be $(0 \lt \chi \lt \Delta)$ Where, $\Delta$ is a small quantity.
Tripura-2021
Magnetism and Matter
154283
When a piece of a magnetic substance is put in a uniform magnetic field, the flux density inside it is four times the flux density away from the piece. The magnetic permeability of the material is
1 1
2 2
3 3
4 4
Explanation:
D When a piece of a ferromagnetic substance is put in a uniform magnetic field. The flux density inside it is 4 time flux density away from the piece. $\therefore \text { Magnetic permeability }\left(\mu_{\mathrm{r}}\right)=\frac{\mathrm{B}_{0}}{\mathrm{~B}_{0}}=\frac{4 \mathrm{~B}_{0}}{\mathrm{~B}_{0}}=4$
AP EAMCET-24.08.2021
Magnetism and Matter
154286
Which one of the following characteristics is not associated with a paramagnetic material?
1 It is weakly magnetised in the direction of the magnetising field, in which it is placed
2 Its magnetic permeability is greater than one
3 Its magnetic susceptibility is positive
4 Its magnetic susceptibility increases with rise in temperature
5 Its individual atom/molecule/ion has a net non-zero magnetic moment of its own
Explanation:
D Its magnetic susceptibility increases with rise in temperature.
154279
The soft- iron is a suitable material for making an electromagnet. This is because soft-iron has
1 low coercivity and high retentivity.
2 low coercivity and low permeability.
3 high permeability and low retentivity.
4 high permeability and high retentivity.
Explanation:
C Electromagnet are made of soft iron because soft iron has low retentivily and the soft iron has high permeability because magnetization is large even for a small magnetizing field.
JEE Main-24.06.2022
Magnetism and Matter
154282
The value of magnetic susceptibility $\chi$ of a paramagnetic sample can be represented by $(\Delta$ being a small quantity)
1 $-\Delta \lt \chi \lt 0$
2 $0 \lt \chi \lt \Delta$
3 $1 \lt \chi \lt 1+\Delta$
4 $1-\Delta \lt \chi \lt 1$
Explanation:
B For paramagnetic substance the susceptibility will be $(0 \lt \chi \lt \Delta)$ Where, $\Delta$ is a small quantity.
Tripura-2021
Magnetism and Matter
154283
When a piece of a magnetic substance is put in a uniform magnetic field, the flux density inside it is four times the flux density away from the piece. The magnetic permeability of the material is
1 1
2 2
3 3
4 4
Explanation:
D When a piece of a ferromagnetic substance is put in a uniform magnetic field. The flux density inside it is 4 time flux density away from the piece. $\therefore \text { Magnetic permeability }\left(\mu_{\mathrm{r}}\right)=\frac{\mathrm{B}_{0}}{\mathrm{~B}_{0}}=\frac{4 \mathrm{~B}_{0}}{\mathrm{~B}_{0}}=4$
AP EAMCET-24.08.2021
Magnetism and Matter
154286
Which one of the following characteristics is not associated with a paramagnetic material?
1 It is weakly magnetised in the direction of the magnetising field, in which it is placed
2 Its magnetic permeability is greater than one
3 Its magnetic susceptibility is positive
4 Its magnetic susceptibility increases with rise in temperature
5 Its individual atom/molecule/ion has a net non-zero magnetic moment of its own
Explanation:
D Its magnetic susceptibility increases with rise in temperature.
