ifos • paper_1 • waves_oscillations
[UPSC IFoS 2016] Diffraction (Q250, 20M)
Discuss the principles of Fresnel's half period zone and explain how these are used in the construction of a zone plate. Show how the zone plate has several foci.
Discuss the principles of Fresnel's half period zone and explain how these are used in the construction of a zone plate. Show how the zone plate has several foci.
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