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CSE · Paper I · Waves & Opticscse-2001-subject-02-005

Laser light — UPSC Physics Optional CSE 2001 Paper I

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A parallel laser beam is incident perpendicularly on a photographic plate. An object is placed at a distance a in front of the photographic plate. Discuss the recording from the plate. If the plate is illuminated by the same light, what is expected and why?

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