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Wave Optics — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsWave Optics1 Mark
Question
Which statement is correct for a zone plate and a lens (a) Zone plate has multi focii whereas lens has one(b) Zone plate has one focus whereas lens has multiple focii(c) Both are correct(d) Zone plate has one focus whereas a lens has infinite
 
 
 
 
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Answer

(a) Zone plate has multi focii whereas lens has one

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