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3
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In Newtons ring experiment, why (i) The planoconvex lens has larger radius of curvature? (ii) The rings get closer away from center? (iii) Central fringe is dark in reflected light? (iv) fringes are
engineering physics updated 4.0 years ago by krithikkm200 • 10
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Explain briefly why the fringes in Newtons ring arrangement are circular whereas they are straight and parallel in air wedge.
engineering physics updated 4.0 years ago by krithikkm200 • 10
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What do you mean by diffraction? State its type and differentiate between them. Why is it not evident in daily life?
engineering physics updated 4.0 years ago by krithikkm200 • 10
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Discuss the phenomenon of Fraunhofers diffraction at single slit and obtain the condition for the first minimum.
engineering physics updated 4.0 years ago by krithikkm200 • 10
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Discuss the phenomenon of Fraunhofers diffraction at double slit and obtain the condition for the first minimum.
engineering physics updated 4.0 years ago by krithikkm200 • 10
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Describe the construction of a diffraction grating. What is grating and grating element? Explain the experimental method of determination of wavelength of spectral line using Diffraction
engineering physics updated 4.0 years ago by krithikkm200 • 10
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Derive the expression of numerical aperture for a step index fiber. What is the importance of acceptance angle in fiber optics communication?
engineering physics updated 4.0 years ago by krithikkm200 • 10
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What is difference between critical angle and acceptance angle?
engineering physics updated 4.0 years ago by krithikkm200 • 10
3
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What is V number? What is its significance. Distinguish between single mode and multimode fiber?
engineering physics updated 4.0 years ago by krithikkm200 • 10
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Explain the construction of optical fibers and Define the term i) Total internal reflection ii) Numerical aperture iii) Acceptance angle?
engineering physics updated 4.0 years ago by krithikkm200 • 10
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3.1k
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Explain highly reflecting film.
engineering physics updated 4.0 years ago by krithikkm200 • 10
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9.8k
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Explain the necessity of broad source in interference in thin films.
engineering physics updated 4.0 years ago by krithikkm200 • 10
1
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9.5k
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State giving the reasons what change do you expect in newtons ring
engineering physics updated 4.0 years ago by krithikkm200 • 10
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How is the phenomenon of interference used to test the optical flatness of a surface.
engineering physics updated 4.0 years ago by krithikkm200 • 10
2
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In Newtons ring experiment, if observed in reflected light, is it possible to obtain bright spot at center? If a light of red color is used first and then a blue light, which set of rings would have
engineering physics updated 4.0 years ago by krithikkm200 • 10
1
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Obtain the expression for the n th dark ring in Newton`s ring experiment. Hence explain a Suitable way to calculate refractive index of a liquid using same set up.
engineering physics updated 4.0 years ago by krithikkm200 • 10
1
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Obtain an expression for fringe width in the interference pattern of wedge shape film. How this phenomenon is used to determine thickness of thin paper.
engineering physics updated 4.0 years ago by krithikkm200 • 10
9
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Obtain the condition for maxima and minima due to interference in a wedge shape film observed in reflected light. How is the interference pattern in wedge shaped film?
engineering physics updated 4.0 years ago by krithikkm200 • 10
0
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1
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38k
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Define dispersive power of a grating. write an expression for dispersive power of grating.
engineering physics updated 4.0 years ago by krithikkm200 • 10
0
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1
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1.4k
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Is there any difference in the diffraction pattern due to double slit and interference due to two sources? Explain.
engineering physics updated 4.0 years ago by krithikkm200 • 10
0
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Show that trajectory of an electron inside a perpendicular electric field is a parabola.
engineering physics updated 4.0 years ago by krithikkm200 • 10
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5.8k
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Discuss motion of electron in magnetic field and derive an expression for magnetostatic deflection
engineering physics updated 4.0 years ago by krithikkm200 • 10
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18k
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What will be effect on diffraction pattern of grating if i) the number of lines in grating is increased. ii) grating element is of the order of a wavelength or less iii) if the rulings are
engineering physics updated 4.0 years ago by krithikkm200 • 10
0
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5.5k
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state Gauss law for static magnetic field in differential and integral form.
engineering physics updated 4.0 years ago by krithikkm200 • 10
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4.7k
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Obtain Amperes circuital law for static magnetic field in differential and integral form.
engineering physics updated 4.0 years ago by krithikkm200 • 10
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