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807
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Explain different phasors of liquid crystal.
engineering physics updated 3.1 years ago by pedsangini276 • 4.8k
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393
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In what sense real crystals differ from ideal crystals? Explain the point defects in crystals.
engineering physics updated 3.1 years ago by pedsangini276 • 4.8k
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730
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Define Reverberation time. Explain how the reverberation time is affected by (i) size (ii) Nature of it's wall surface (iii) Audience
engineering physics updated 3.1 years ago by pedsangini276 • 4.8k
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6.8k
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Explain Alternate mode and Chop mode in a dual trace oscilloscope.
engineering physics updated 3.1 years ago by pedsangini276 • 4.8k
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576
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Explain Kevin's double bridge and its application in very low resistance measurement.
engineering physics updated 3.1 years ago by sagarkolekar ★ 11k
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1.6k
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Explain kelvin's double bridge and its application in very low resistance measurement.
engineering physics updated 3.1 years ago by RakeshBhuse • 3.2k
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773
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Lasers and Optical fibers
engineering physics updated 3.1 years ago by Krishna_Agrawal • 2.7k
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4.2k
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With a neat energy level diagram describe the construction and working of He-Ne laser. What are its merits and demerits ?
engineering physics updated 3.1 years ago by pradnyanabar2613 ★ 5.2k
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6.6k
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What is the fundamental principle of a Hologram? How is it produced and how is the image constructed by it?
engineering physics updated 3.1 years ago by pradnyanabar2613 ★ 5.2k
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459
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Define power and energy and explain working of an energy meter.
engineering physics updated 3.1 years ago by pradnyanabar2613 ★ 5.2k
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Discuss formation of copper pairs and energy gap in superconductor on the basis of BCS theory.
engineering physics updated 3.1 years ago by pedsangini276 • 4.8k
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Cal the numerical aperture of the fiber with core index $\mu_1 =1.61$ and cladding index $\mu_2=1.55$
engineering physics updated 3.1 years ago by pedsangini276 • 4.8k
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2.8k
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Comment on colours in a soap film of sunlight
engineering physics updated 3.1 years ago by pedsangini276 • 4.8k
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Derive the formula for angle of minimum deviation for the prism
engineering physics updated 3.1 years ago by pedsangini276 • 4.8k
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A stick of mass density $\rho$ per unit length rests on a circle of radius $R$ which makes an angle $\theta$ with horizontal and tangent to the circle at its upper end. Find the friction between them?
engineering physics updated 3.1 years ago by pedsangini276 • 4.8k
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2.6k
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Derive the formula $E=mc^2$ from the standard equation of kinetic energy?
engineering physics updated 3.1 years ago by pedsangini276 • 4.8k
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3.8k
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What is hysteresis? Draw a hysteresis loop for ferromagnetic material and explain the various important points on it. What is the technical significance of the area enclosed by the loop?
engineering physics updated 3.1 years ago by sagarkolekar ★ 11k
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11k
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Determine the lattice constant for FCC lead crystal of radius 1,746 A* and also find the spacing of (2 2 0) plane.
engineering physics updated 3.1 years ago by chinthasaiteja746 • 30
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1.3k
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Define and explain Bulk Modulus.
engineering physics updated 3.1 years ago by DevarenjiniP • 3.2k
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654
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Define solenoidal vector. Hence prove that $( \overline {F} = \dfrac{\overline{a}\times\overline{r}}{r^n} )$ is a solenoidal vector.
engineering physics updated 3.1 years ago by prakhar1144 ★ 5.0k
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692
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An electron is accelerated through a potential difference of 5 kV and enters a uniform magnetic field of 0.02 Wb/m${2}$ acting normal to the direction of electron motion.
engineering physics updated 3.1 years ago by DevarenjiniP • 3.2k
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5.8k
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Draw the schematic diagram of TEM and explain its construction and working.
engineering physics updated 3.1 years ago by sagarkolekar ★ 11k
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76k
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Explain formation of energy bands in solids and explain classification on the basis of energy band theory.
engineering physics updated 3.1 years ago by sagarkolekar ★ 11k
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24k
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What are different types of pumping and pumping schemes. Why four level pumping schemes is superior to three level. Why two-level pumping scheme is not suitable?
engineering physics updated 3.2 years ago by sagarkolekar ★ 11k
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Explain the condition for amplification of light. What is the importance of metastable state and pumping in LASER?
engineering physics updated 3.2 years ago by pedsangini276 • 4.8k
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