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The principle of generation of the wavefront from an object from a hologram can be used for _________

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The principle of generation of the wavefront from an object from a hologram can be used for _________

(a) Data Storage

(b) Transient Microscopy

(c) Interferometry

(d) Pattern recognition

I have been asked this question in a national level competition.

The above asked question is from HoloGraphy topic in section Optics of Engineering Physics II

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Right choice is (d) Pattern recognition

The explanation: Holography can be used to identify fingerprints, postal addresses, etc. The wavefront from an object is generated from a hologram. The process is reversible and reference wave can be generated by object wave, which is the basis of character recognition.

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