Question

Water waves of wavelength 4m are produced by two generators S1 and S2.



Each generation when operated by itself produces waves which have an amplitude A and P which is 3m from S1 and 5m from S2.



When the generator are operated in phase,what is the amplitude of oscillation at P?



A. 0



B. 1/2A



C. A



D. 2A




»»answer is A. I just need the reasoning :)

Answer 1

A is not the correct answer because the amplitude and oscillation and there is 1/2 A in oscillation