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Explain ionic polarization and obtain polarizability
engineering physics updated 7.8 years ago by teamques10 ★ 65k
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Explain the origin of electronic, ionic and orientational polarization and temperature dependence of respective polarizability.
engineering physics updated 7.8 years ago by teamques10 ★ 65k
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What is Fermi level and Fermi energy? Write Fermi- Dirac distribution function.
engineering physics updated 7.8 years ago by teamques10 ★ 65k
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Explain the concept of hole in a semiconductor.
engineering physics updated 7.8 years ago by teamques10 ★ 65k
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Write three distinct differences between ionic and orientational polarization.
engineering physics updated 7.8 years ago by teamques10 ★ 65k
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Draw the permeability against external magnetic field for a paramagnetic and ferromagnetic material (below Curie temperature).
engineering physics updated 7.8 years ago by teamques10 ★ 65k
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Explain the variation in magnetic induction with magnetic field for a ferromagnetic material, Calculate the susceptibility and the permeability.
engineering physics updated 7.8 years ago by teamques10 ★ 65k
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Define: drift current, diffusion current and mobility of charge carriers.
engineering physics updated 7.8 years ago by teamques10 ★ 65k
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What is the probability of an electron being thermally promoted to conduction band in diamond at 27C, if bandgap is 5.6 eV wide?
engineering physics updated 7.8 years ago by teamques10 ★ 65k
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Explain orientational polarization with suitable diagram and write the mathematical expression of orientational polarizability.
engineering physics updated 7.8 years ago by teamques10 ★ 65k
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Calculate magnetic flux density and magnetisation in copper.
engineering physics updated 7.8 years ago by teamques10 ★ 65k
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Define Reverberation Time. Write Sabine's Formula and explain the terms in it.
engineering physics updated 7.8 years ago by teamques10 ★ 65k
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State the terms: magnetostriction effect; piezo-electric effect.
engineering physics updated 7.8 years ago by teamques10 ★ 65k
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Explain the absorption coefficient of a hall. Calculate the change in intensity level when the intensity of sound increases 1000 times its original intensity.
engineering physics updated 7.8 years ago by teamques10 ★ 65k
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Explain piezoelectric oscillator to produce USW.
engineering physics updated 7.8 years ago by teamques10 ★ 65k
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Explain analysis of crystal structure using Braggs X-ray spectrometer.
engineering physics updated 7.4 years ago by teamques10 ★ 65k
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Monochromatic high energy x-rays are incident on a crystal. If 1st order reflection is observed at an angle $(3.4)^0$, at what angle would 2nd order reflection be expected.
engineering physics updated 7.4 years ago by teamques10 ★ 65k
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Draw the following w.r.t a cubic unit cell. $(1 \bar{1} 1)(\bar{1} 1 1)[1 2 3]$
engineering physics updated 7.4 years ago by teamques10 ★ 65k
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Draw the unit cell and Basis of DC structure.
engineering physics updated 7.4 years ago by teamques10 ★ 65k
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Describe principle, construction and working of magnetostriction oscillator to produce ultrasonic waves.
engineering physics updated 7.8 years ago by teamques10 ★ 65k
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calculate the coefficient of absorption of curtain cloth.
engineering physics updated 7.8 years ago by teamques10 ★ 65k
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Write Sabines formula explaining each term. Explain how this formula can be used for the determination of absorption coefficient of a given material
engineering physics updated 7.8 years ago by teamques10 ★ 65k
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State the acoustic requirement of good auditorium. Explain how these requirements can be achieved.
engineering physics updated 7.8 years ago by teamques10 ★ 65k
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An ultrasonic sound wave is used to detect the position of defect in a steel bar of thickness 50 cm. If the echo times are 40 and 90 s, locate the position of defect.
engineering physics updated 7.8 years ago by teamques10 ★ 65k
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Represent the following in the cubic unit cell (021), (123), [121]
engineering physics updated 3.0 years ago by teamques10 ★ 65k
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