Q. If a small amount of Cu is added to Ni conductor, then

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Q. When a dielectric material is subjected to alternating field, the absorption of energy by the material from the field is given by the imaginary part of polarizability.

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Q. If the number of atoms per unit volume of a monoatomic gas changes, the dielectric constant still remains constant.

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Q. The number of protons in a copper atom are

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Q. When a material is in superconducting state and a magnetic field is applied

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Q. For a diamagnetic material, μᵣ = 1.

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Q. We can know the arrangement of atom in a material by studying electron diffraction pattern.

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Q. The magnetic quantum number determines the component of angular momentum along a prescribed direction.

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Q. Wood is a diamagnetic material.

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Q. Curie Weiss law is Ɛ = C/(T-ϴ) .

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Q. Consider the following materials

1. Nickel
2. Silver
3. Oxygen
4. Aluminium

The correct sequence in the order of decreasing permeability is

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Q. Yettrium-iron garnet (Y₂Fe₅O₁₂) is a soft magnetic material suitable for applications involving

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Q. The mass of proton and electron are

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Q. A rare gas having N atoms/m³ is subjected to an electric field E. The electric dipole moment per unit volume is proportional to N and E.

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Q. In an intrinsic semiconductor, at a given temperature T

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Q. The core of a solenoid is made of material of relative permeability μᵣ. A small cavity area dA and length dl is cut in the core. If it is desired that flux density in the cavity should be equal to B0

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Q. A copper specimen has resistivity equal to 1.8 x 10¯⁸ ohm-m at room temperature. At a temperature of 700 K, the resistivity is likely to be

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Q. Assertion (A): Dielectric constant is independent of temperature unless the temperature is extremely high.

Reason (R): For normal temperatures the number of atoms per unit volume is constant.

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Q. As the atoms of rare gases become larger, electronic polarizability

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Q. Ferrimagnetic materials have anti-parallel orientation of equal moments of permanent dipoles.

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