NEET Physics Waves Questions Solved

Two sound waves (expressed in CGS units) given by y1=0.3sin2πλ(vtx) and y2=0.4sin2πλ(vtx+θ) interfere. The resultant amplitude at a place where phase difference is π/2 will be

(1) 0.7 cm

(2) 0.1 cm

(3) 0.5 cm

(4) 1107cm

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