1.

Four different independent waves are represented by (i) y_(1) = a_(1) sin omega t , (ii) y_(2) = a_(2) sin 2 omega t (iii) y_(3) = a_(3) cos omega t , (iv) y_(4) = a_(4) sin (omega t+(pi)/(3)) With which two waves interference is possible

Answer»

In (i) and (III)
In (i) and (IV)
In (iii) and (iv)
INSUFFICIENT data to PREDICT.

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