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प्रश्न
Which of the following substances are para-magnetic?
Bi, Al, Cu, Ca, Pb, Ni
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उत्तर
Paramagnetic substances are Aluminum (Al) and Calcium (Ca).
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संबंधित प्रश्न
Explain Curie’s law for a paramagnetic substance.
The relative magnetic permeability of a magnetic material is 800. Identify the nature of magnetic material and state its two properties.
Choose the correct option:
A rectangular magnet suspended freely has a period of oscillation equal to T. Now it is broken into two equal halves (each having half of the original length) and one piece is made to oscillate freely. Its period of oscillation is T′, the ratio of T′/T is ______.
If a magnetic field is applied to a liquid in one arm of a narrow U-tube, the liquid level in that arm is lowered. The liquid in U-tube arm is ______.
There are three needles 'N1', 'N2' and 'N3' made of a ferromagnetic, a paramagnetic and a diamagnetic substance respectively. When a magnet is brought close to them, then it will ____________.
The product of magnetic susceptibility (`chi`) and absolute temperature (T) is constant for a ____________.
Above the curie temperature the susceptibility of ferromagnetic substance varies ____________.
A certain region of space is to be shielded from magnetic fields. Suggest a method.
When a ferromagnetic material is created above its curie temperature
