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Four light waves are expressed as (i)y1=...

Four light waves are expressed as
(i)`y_1=a_1 sin omegat,`
(ii)`y_2=a_2 sin 2 omega t,`
(iii)`y_3 = a_3 cos (omega t + phi)` and
(iv)`y_4 = a_4 sin 2 (omega t + phi)`.
The interference is possible between

A

(i) and (ii)

B

(i) and (iii)

C

(ii) and (iv)

D

(iii) and (iv)

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MODERN PUBLICATION-UNIT TEST -06-EXERCISE
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