In crystalline solids, atoms are stacked in a regular manner.

More Questions from Materials and Components

• Orbital magnetic dipole moment is due to the motion of electron in its orbit around nucleus.
• In a piezoelectric crystal, the application of mechanical force will cause
• A piece of iron is placed in a magnetic field
• Assertion (A): If difference between static and optical dielectric constant is high, the mechanical compressiblity of that material is also high. Reason (R): For soft ions, ionic polarization per unit field is higher than that of hard ions.
• Assertion (A): In Figure, the intercept of the line on y-axis is equal to N (ae + ai), where N is number of atoms/m3, ae is electronic polarizability and ai is ionic polarizability. Reason (R): ae and ai are independent of temperature.
• Semi conducting materials are all
• In a metal, the drift velocity of electrons in the presence of a electric field E is
• Inductors used at V.H.F. are made using
• Assertion (A): The resistance of a copper specimen changes by about 22% when temperature is increased from room temperature to 700°C. Reason (R): The physical properties of a material are determined mostly by the extent of impurities.
• Assertion (A): For elemental dielectrics, P = NaeEi where N is number of atoms/m3, P is polarization, ae is electronic polarization and Ei is internal electric field. Reason (R): In elemental dielectrics there are no permanent dipoles or ions.

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