Advertisements
Advertisements
प्रश्न
Why is diamagnetism, in contrast, almost independent of temperature?
Advertisements
उत्तर
Each molecule of the diamagnetic material is not a magnetic dipole in itself. Hence, the random thermal motion of the molecules of the diamagnetic material (which is related to the temperature) does not affect the diamagnetism of the material.
APPEARS IN
संबंधित प्रश्न
In what way is the behaviour of a diamagnetic material different from that of a paramagnetic, when kept in an external magnetic field?
Out of the two magnetic materials, 'A' has relative permeability slightly greater than unity while 'B' has less than unity. Identify the nature of the materials 'A' and 'B'. Will their susceptibilities be positive or negative?
Show diagrammatically the behaviour of magnetic field lines in the presence of (i) paramagnetic and (ii) diamagnetic substances. How does one explain this distinguishing feature?
Explain Curie’s law for a paramagnetic substance.
The susceptibility of a magnetic material is − 2.6 × 10−5. Identify the type of magnetic material and state its two properties.
Choose the correct option:
A magnetising field of 360 Am−1 produces a magnetic flux density (B) = 0.6T in a ferromagnetic material. What is its permeability in Tm A−1?
The susceptibility of a paramagnetic material is χ at 27° C. At what temperature its susceptibility be χ/3?
The product of magnetic susceptibility (`chi`) and absolute temperature (T) is constant for a ____________.
Why does a paramagnetic sample display greater magnetisation (for the same magnetising field) when cooled?
If a toroid uses bismuth for its core, will the field in the core be (slightly) greater or (slightly) less than when the core is empty?
Would the maximum possible magnetisation of a paramagnetic sample be of the same order of magnitude as the magnetisation of a ferromagnet?
The given figure represents a material which is ______.
Two identical bar magnets are fixed with their centres at a distance d apart. A stationary charge Q is placed at P in between the gap of the two magnets at a distance D from the centre O as shown in the figure. The force on the charge Q is ______.
A hydrogen atom is paramagnetic. A hydrogen molecule is
Magnetic susceptibility for a paramagnetic and diamagnetic materials is respectively ______.
Magnetic susceptibility of a diamagnetic substance ______.
