Four different independent waves are represented bya) y1=a1 sin ω1tb) y2=a2 sin ω2tc) y3=a3 sin ω3td) y4=a4 sin ω4t+π3The sustained interference is possible due to

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Four different independent waves are represented by

a) $y_{1} = a_{1} \sin ω_{1} t$

b) $y_{2} = a_{2} \sin ω_{2} t$

c) $y_{3} = a_{3} \sin ω_{3} t$

d) $y_{4} = a_{4} \sin (ω_{4} t + \frac{π}{3})$

The sustained interference is possible due to

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c & d

a & d

a & c

not possible with any combination

answer is D.

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Detailed Solution

Interface required same wave length & same frequency and constant (a) zero phase difference

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