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Advanced Engineering Physics

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What is the numerical aperture? Explain the use of optical fibre in temperature sensor.
advanced engineering physics updated 5.6 years ago by sanketshingote • 100
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Calculate the V number of an optical fibre having numerical aperture 0.25 and core diameter 20 m, if its operating wavelength is 1.55 $\mu$m.
advanced engineering physics updated 5.6 years ago by sanketshingote • 100
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A fibre cable has an acceptance angle of 30$^{\circ}$ and core index of refractive index 1.4. Calculate the refractive index of cladding.
advanced engineering physics updated 5.6 years ago by sanketshingote • 100
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The core diameter of multimode step index fibre is 50$\mu$m. The numerical aperture is 0.25. Calculate the number of guided modes at an operating wavelength of 0.75$\mu$m?
advanced engineering physics updated 5.6 years ago by sanketshingote • 100
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Differentiate between step index and graded index fibre.
advanced engineering physics updated 5.6 years ago by sanketshingote • 100
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Explain the concept of electrostatic focusing in electron optics.
advanced engineering physics updated 5.6 years ago by sanketshingote • 100
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Differentiate between spontaneous and stimulated emission.
advanced engineering physics updated 5.6 years ago by teamques10 ★ 70k
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What is difference between photography and holography? Explain holography technique to obtain 3-D image of an object.
advanced engineering physics updated 5.6 years ago by sanketshingote • 100
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What is holography? Differentiate between holography and photography.
advanced engineering physics updated 5.6 years ago by sanketshingote • 100
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Explain construction and working of Nd:YAG laser.
advanced engineering physics updated 5.6 years ago by sanketshingote • 100
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What is pumping in Laser? Give the types of pumping.
advanced engineering physics updated 5.6 years ago by sanketshingote • 100
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What is population inversion? Explain its significance in the operation of LASER. Why is it called state of negative temperature?
advanced engineering physics updated 5.6 years ago by sanketshingote • 100
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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 ? OR Explain construction and working of He:Ne laser with neat label diagram.
advanced engineering physics updated 5.6 years ago by sanketshingote • 100
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Explain the construction and reconstruction of hologram with neat diagram.
advanced engineering physics updated 5.6 years ago by sanketshingote • 100
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With the help of a proper diagram and necessary expression, explain how Newtons ring experiment is useful to determine the radius of curvature of a plano convex lens.
advanced engineering physics updated 5.6 years ago by teamques10 ★ 70k
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A Newton's rings set up is used with a source emitting two wavelength $\lambda_{1}$=6000A$^{\circ}$ and $\lambda_{2}$=4500A$^{\circ}$.
advanced engineering physics updated 5.6 years ago by sanketshingote • 100
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Derive the condition for absent spectra in grating.
advanced engineering physics updated 5.6 years ago by sanketshingote • 100
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With the help of proper diagram and necessary expression, explain how Newton`s ring experiment is useful to determine the radius of curvature of a plano-convex lens.
advanced engineering physics updated 5.6 years ago by sanketshingote • 100
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Explain Newton's ring experiment and show that diameters of n th dark rings are proportional to square root of natural numbers.
advanced engineering physics updated 5.6 years ago by sanketshingote • 100
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(Duplicate) A wedge shaped air film having an angle of 40 seconds is illuminated by monochromatic light and fringes are observed vertically through a microscope.
advanced engineering physics updated 5.6 years ago by sanketshingote • 100
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Discuss the Fraunhofer diffraction at single slit and obtain the condition for minima.
advanced engineering physics updated 5.6 years ago by sanketshingote • 100
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In Newton's rings pattern what will be the order of the dark ring which will have double the diameter of the 40th dark ring.
advanced engineering physics updated 5.6 years ago by sanketshingote • 100
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What is diffraction grating? What is the advantage of increasing the number of lines in the grating?
advanced engineering physics updated 5.6 years ago by sanketshingote • 100
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Explain how interference in wedge shaped film is used to test flatness of given glass plate.
advanced engineering physics updated 5.6 years ago by sanketshingote • 100
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A wedge shaped film having angle of 40 seconds is illuminated by monochromatic light.
advanced engineering physics updated 5.6 years ago by sanketshingote • 100
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