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In YDSE set up (see fig.), the light sou...

In YDSE set up (see fig.), the light sources executes SHM between P and Q according to the equation `x = A sin omega t`, S being the mean position. Assume `d rarr 0` and `A lt lt L`. `omega` is small enough to neglect Doppler effect. If the sources were stationary at S, intenstiy at O would be `I_(0)`
Read the paragraph carefully and answer the following questions.

The fractional change in intensity of the central maximum as function of time is

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