Question No 22. Holography is a technique of:
- 1) recording a permanent sharp two dimensional black and white or multicolor photograph
- 2) recording a permanent three dimensional multicolour photograph
- 3) recording a permanent three dimensional black and white photograph
- 4) recording a permanent three dimensional photograph of a given single colour or a multicolor
General Science Questions have been taken from previous years question papers of different competitive examinations such SSC CGL, SSC CHSL, CDS, NDA, Bank, State PSC, Railways, MAT, CAT, etc.
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