Q. For obtaining information about fine fibers, waves used are

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Q. A diffraction grating of normally spaced lines, illuminated by parallel lines will give set of fringes with maxima of

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Q. For preferred orientation of crystals, pattern is

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Q. Angles subtended by arcs helps in calculation of fibre's

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Q. Limit of resolution is order of magnitude of

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Q. Photograph of glass shows

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Q. Broadening of spots into arcs shows a decrease in degree of

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Q. Restriction on angles at which crystals lie has reduced the

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Q. Wide angle diffraction gives information about the

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Q. Restriction of angles reduces diffraction pattern from circles to

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Q. Information received from scattered light when passed through photographic slide can be converted into a picture on screen using

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Q. Diffraction through moving threadline can be done using

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Q. Crystals in fibers are usually oriented

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Q. Enhanced quantitative information on diffraction pattern is given by

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Q. A crystal features

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Q. Four spots formed from diffraction in fibre photograph lies

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Q. In delustred viscose rayon, outside main pattern there is a

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Q. Studies regarding narrow angle photographs gives information about

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Q. If light is diffracted through fibre and scattered internally, he pattern formed will be

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Q. Patterns are always different for crystals having different

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