154288
The relative permeability of paramagnetic and ferromagnetic materials are
1 Equal to zero
2 equal to unity
3 negative
4 greater than unity
Explanation:
D A paramagnetic material has a constant relative permeability slightly more than 1 and ferromagnetic material has relative permeability is much greater than 1 i.e. more than 100 .
TS EAMCET 29.09.2020
Magnetism and Matter
154289
Curie temperature is the one above which
1 paramagnetic substance changed to ferromagnetic
2 paramagnetic changes to diamagnetic
3 diamagnetic changes to paramagnetic
4 ferromagnetic changes to paramagnetic
Explanation:
D When ferromagnetic materials are heated, they lose their properties and converted into paramagnetic materials above a certain temperature. This temperature is called curie temperature.
Tripura -2020
Magnetism and Matter
154290
The material used for permanent magnet has :
1 low retentivity, high coercivity
2 high retentivity, low coercivity
3 high retentivity, high coerecivity
4 low retentivity, low coercivity
Explanation:
C Permanent magnet should have high retentivety so that the magnet is strong. And high coercivity so that external magnetic field in opposite direction cannot easily demagnetize the magnet
TS EAMCET 14.09.2020
Magnetism and Matter
154293
A sphere of gold when brought towards a powerful magnet experiences
1 nuclear force
2 attractive force
3 zero force
4 repulsive force
Explanation:
D A sphere of gold when brought towards a powerful magnet experiences repulsive force, because gold is a diamagnetic substance.
154288
The relative permeability of paramagnetic and ferromagnetic materials are
1 Equal to zero
2 equal to unity
3 negative
4 greater than unity
Explanation:
D A paramagnetic material has a constant relative permeability slightly more than 1 and ferromagnetic material has relative permeability is much greater than 1 i.e. more than 100 .
TS EAMCET 29.09.2020
Magnetism and Matter
154289
Curie temperature is the one above which
1 paramagnetic substance changed to ferromagnetic
2 paramagnetic changes to diamagnetic
3 diamagnetic changes to paramagnetic
4 ferromagnetic changes to paramagnetic
Explanation:
D When ferromagnetic materials are heated, they lose their properties and converted into paramagnetic materials above a certain temperature. This temperature is called curie temperature.
Tripura -2020
Magnetism and Matter
154290
The material used for permanent magnet has :
1 low retentivity, high coercivity
2 high retentivity, low coercivity
3 high retentivity, high coerecivity
4 low retentivity, low coercivity
Explanation:
C Permanent magnet should have high retentivety so that the magnet is strong. And high coercivity so that external magnetic field in opposite direction cannot easily demagnetize the magnet
TS EAMCET 14.09.2020
Magnetism and Matter
154293
A sphere of gold when brought towards a powerful magnet experiences
1 nuclear force
2 attractive force
3 zero force
4 repulsive force
Explanation:
D A sphere of gold when brought towards a powerful magnet experiences repulsive force, because gold is a diamagnetic substance.
154288
The relative permeability of paramagnetic and ferromagnetic materials are
1 Equal to zero
2 equal to unity
3 negative
4 greater than unity
Explanation:
D A paramagnetic material has a constant relative permeability slightly more than 1 and ferromagnetic material has relative permeability is much greater than 1 i.e. more than 100 .
TS EAMCET 29.09.2020
Magnetism and Matter
154289
Curie temperature is the one above which
1 paramagnetic substance changed to ferromagnetic
2 paramagnetic changes to diamagnetic
3 diamagnetic changes to paramagnetic
4 ferromagnetic changes to paramagnetic
Explanation:
D When ferromagnetic materials are heated, they lose their properties and converted into paramagnetic materials above a certain temperature. This temperature is called curie temperature.
Tripura -2020
Magnetism and Matter
154290
The material used for permanent magnet has :
1 low retentivity, high coercivity
2 high retentivity, low coercivity
3 high retentivity, high coerecivity
4 low retentivity, low coercivity
Explanation:
C Permanent magnet should have high retentivety so that the magnet is strong. And high coercivity so that external magnetic field in opposite direction cannot easily demagnetize the magnet
TS EAMCET 14.09.2020
Magnetism and Matter
154293
A sphere of gold when brought towards a powerful magnet experiences
1 nuclear force
2 attractive force
3 zero force
4 repulsive force
Explanation:
D A sphere of gold when brought towards a powerful magnet experiences repulsive force, because gold is a diamagnetic substance.
154288
The relative permeability of paramagnetic and ferromagnetic materials are
1 Equal to zero
2 equal to unity
3 negative
4 greater than unity
Explanation:
D A paramagnetic material has a constant relative permeability slightly more than 1 and ferromagnetic material has relative permeability is much greater than 1 i.e. more than 100 .
TS EAMCET 29.09.2020
Magnetism and Matter
154289
Curie temperature is the one above which
1 paramagnetic substance changed to ferromagnetic
2 paramagnetic changes to diamagnetic
3 diamagnetic changes to paramagnetic
4 ferromagnetic changes to paramagnetic
Explanation:
D When ferromagnetic materials are heated, they lose their properties and converted into paramagnetic materials above a certain temperature. This temperature is called curie temperature.
Tripura -2020
Magnetism and Matter
154290
The material used for permanent magnet has :
1 low retentivity, high coercivity
2 high retentivity, low coercivity
3 high retentivity, high coerecivity
4 low retentivity, low coercivity
Explanation:
C Permanent magnet should have high retentivety so that the magnet is strong. And high coercivity so that external magnetic field in opposite direction cannot easily demagnetize the magnet
TS EAMCET 14.09.2020
Magnetism and Matter
154293
A sphere of gold when brought towards a powerful magnet experiences
1 nuclear force
2 attractive force
3 zero force
4 repulsive force
Explanation:
D A sphere of gold when brought towards a powerful magnet experiences repulsive force, because gold is a diamagnetic substance.
