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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Is the permeability of a ferromagnetic material independent of the magnetic field? If not, is it more for lower or higher fields?

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प्रश्न

Is the permeability of a ferromagnetic material independent of the magnetic field? If not, is it more for lower or higher fields?

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उत्तर

The permeability of ferromagnetic materials is not independent of the applied magnetic field. It is greater for a lower field and vice versa.

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पाठ 5: Magnetism and Matter - Exercise [पृष्ठ २०२]

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एनसीईआरटी Physics Part I and II [English] Class 12
पाठ 5 Magnetism and Matter
Exercise | Q 5.16 (d) | पृष्ठ २०२

संबंधित प्रश्‍न

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?


A meter gauge train is heading north with speed 54 km/hr in earth's magnetic field 3 x 10-4T. The e.m.f. induced across the axle joining the wheels is ..........

(a) 0.45 mV

(b) 4.5 mV

(c) 45 mV

(d) 450 m V


The susceptibility of a magnetic material is 0·9853. Identify the type of magnetic material. Draw the modification of the field pattern on keeping a piece of this material in a uniform magnetic field.


The susceptibility of a magnetic material is − 2.6 × 10−5. Identify the type of magnetic material and state its two properties.


Draw magnetic field line when a (i) diamagnetic, (ii) paramagnetic substance is placed in an external magnetic field. Which magnetic property distinguishes this behaviour of the field line due to the substances?


The magnetic susceptibility of platinum is 0.0001. It's relative permeability is: 


The magnetic susceptibility of a paramagnetic material at - 73 °C is 0.0075. Its value at -173 °C will be ______.


All atoms of a magnetic substance have a resultant magnetic moment even in absence of external magnetic field. The substance is ______.


The materials having negative magnetic susceptibility are ____________.


The product of magnetic susceptibility (`chi`) and absolute temperature (T) is constant for a ____________.


A short bar magnet has a magnetic moment of 0.48 J T−1. Give the direction and magnitude of the magnetic field produced by the magnet at a distance of 10 cm from the centre of the magnet on

  1. the axis,
  2. the equatorial lines (normal bisector) of the magnet.

Which graph shows the variation of magnetic susceptibility (`chi`) with magnetizing field (H) for a paramagnetic substance?


Would the maximum possible magnetisation of a paramagnetic sample be of the same order of magnitude as the magnetisation of a ferromagnet?


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Which of the following property shows the property of ferromagnetic substances?


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Magnetic susceptibility for a paramagnetic and diamagnetic materials is respectively ______.


Magnetic susceptibility of a diamagnetic substance ______.


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