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A ball of superconducting material is dipped in liquid nitrogen and place near a bar magnet. (i) In which direction will it move? (ii) What will be the direction of its magnetic moment?
A ball of superconducting material placed near a bar magnet behaves as a perfect diamagnet. (i) It moves away from the bar magnet. (ii) The induced magnetic moment in the ball opposes the magnetic moment of the bar magnet. For more visit here: https://www.tiwariacademy.com/ncert-solutions/class-12/pRead more
A ball of superconducting material placed near a bar magnet behaves as a perfect diamagnet. (i) It moves away from the bar magnet. (ii) The induced magnetic moment in the ball opposes the magnetic moment of the bar magnet.
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Discuss the variation of g on earth’s surface due to shape of the earth. Why does the weight of a body increase when it is taken from the equator to the pole?
Effect of the Earth's Shape on g: The Earth is not a perfect sphere; it is slightly flattened at the poles and bulges at the equator. This means the equatorial radius of the Earth is about 21 km greater than the polar radius. Since the acceleration due to gravity is inversely proportional to the squRead more
Effect of the Earth’s Shape on g:
The Earth is not a perfect sphere; it is slightly flattened at the poles and bulges at the equator. This means the equatorial radius of the Earth is about 21 km greater than the polar radius.
Since the acceleration due to gravity is inversely proportional to the square of the radius g ∝ 1/R² , the larger radius at the equator results in a lower value of g , while the smaller radius at the poles leads to a higher value of g.
Thus, gravity is minimum at the equator and maximum at the poles. This explains why the weight of an object increases when it is moved from the equator to the poles. The variation in g between the poles and the equator is approximately 0.5%.
See lessThe susceptibility of a magnetic material is – 2.6 × 10-⁵. Identify the type of magnetic material and state its two properties.
The given material is diamagnetic, as its susceptibility is negative (– 2.6 × 10-⁵). Two important properties are: (i) Diamagnetic materials are feebly repelled by a magnetic field and move from stronger to weaker field regions. (ii) Their individual atoms have zero magnetic dipole moment. For moreRead more
The given material is diamagnetic, as its susceptibility is negative (– 2.6 × 10-⁵). Two important properties are:
(i) Diamagnetic materials are feebly repelled by a magnetic field and move from stronger to weaker field regions.
(ii) Their individual atoms have zero magnetic dipole moment.
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Out of the two magnetic material, 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?
Material A, with relative permeability slightly greater than unity, is a paramagnetic material with positive susceptibility. Material B, with relative permeability slightly less than unity, is a diamagnetic material with negative susceptibility. For more visit here: https://www.tiwariacademy.com/nceRead more
Material A, with relative permeability slightly greater than unity, is a paramagnetic material with positive susceptibility. Material B, with relative permeability slightly less than unity, is a diamagnetic material with negative susceptibility.
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Difine magnetic susceptibility of a material. Name two elements, one having positive susceptibility and the other having negative susceptibility. What does nagative susceptibility signify?
Magnetic susceptibility (χ) measures a material's ability to be magnetized in an external magnetic field. Copper, a diamagnetic material, has negative susceptibility, while aluminum, a paramagnetic material, has positive susceptibility. Negative susceptibility signifies that the material is repelledRead more
Magnetic susceptibility (χ) measures a material’s ability to be magnetized in an external magnetic field. Copper, a diamagnetic material, has negative susceptibility, while aluminum, a paramagnetic material, has positive susceptibility. Negative susceptibility signifies that the material is repelled by a magnetic field, expelling magnetic field lines from within it.
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