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EAMCET Engineering 2009 Solved Paper

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Question : 22

Total: 160

Four light sources produce the following four waves:
(i) y1=asin‌(ωt+φ1)
(ii) y2=asin‌2ωt
(iii) y3=a′sin‌(ωt+φ2)
(iv) y4=α′sin‌(3ωt+φ)
Superposition of which two waves give rise to interference?

(i) and (ii)
(ii) and (iii)
(i) and (iii)
(iii) and (iv)

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