Two waves of nearly same amplitude, same frequency travelling with same velocity are superimposing to give phenomenon of interference. If alpha_1 and alpha_2be their respective amplitudes, omegabe frequency for both, 'v' be the velocity for both and Delta phiis the phase difference between the two waves then

Two waves of nearly same amplitude, same frequency travelling with sam

1.	Two waves of nearly same amplitude, same frequency travelling with same velocity are superimposing to give phenomenon of interference. If alpha_1 and alpha_2be their respective amplitudes, omegabe frequency for both, 'v' be the velocity for both and Delta phiis the phase difference between the two waves then
Answer» the resultant intensity VARIES periodically with time and DISTANCE. the resultant intensity with`(I_("MIN"))/(I_(max)) = ((a_1 - a_2)/(a_1 + a_2))^2` is obtained both the waves must have been travelling in the same DIRECTION and must be coherent. `I_s = I_1 + I_2 + 2 sqrt(I_1 I_2) cos (Delta pi)`where constuctive interference is obtained for path differences THATARE even multiple of `1/2 lamda ` and destructive interference is obtained for path differences that areodd multiple `1/2 lamda ` Answer :A::B::C::D

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