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In a single-slit diffraction pattern, if the light source used is of less wavelength than the previous one, the width of the central fringe would be,
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Important Questions on Wave Optics
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In the laboratory, diffraction of light by a single slit is being observed. If slit is made slightly narrow, then diffraction pattern will,
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In a Fraunhofer's diffraction by a slit, if slit width is , wavelength , the focal length of the lens is , then linear width of central maxima is
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In a Fraunhofer's diffraction obtained by a single slit aperture, the value of path difference for order minima is,
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A light source of A wave length produces a single slit diffraction. The first minima in diffraction pattern is seen, at a distance of from central maxima. The distance between screen and slit is metre. The width of slit in will be :
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A plane wavefront of wavelength is incident upon a slit of width, which enables Fraunhofer's diffraction pattern to be obtained on a screen away. The width of the central maxima in will be,
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Waves of wavelength are incident normally on a slit of width. The value of diffraction angle corresponding to the first minima will be (in radian),
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In Fraunhofer diffraction the centre diffraction image is
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Bending of light waves at the sharp edges of an opaque obstacle is known as
