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Fresnel’s type diffraction is observed when __________. A. Only screen is placed at finite distance B. Only source is placed at finite distance C. Both source and screen are at finite distance D. Neither source nor screen is at finite distance

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Fresnel’s type diffraction is observed when __________. A. Only screen is placed at finite distance
B. Only source is placed at finite distance
C. Both source and screen are at finite distance
D. Neither source nor screen is at finite distance
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C. Both source and screen are at finite distance
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