Coverage of interference and diffraction on MCAT?

[monkeyMD]

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The BR seems to make it very very detailed... but I don't remember it being so detailed in the EK books. Any advice?

 

[DISCOSTEW]

it wouldn't be covered in much detail. From my experience, conceptually you just have to know what happens when waves are in phase and out of phase. Whether you need to add or subtract the amplitudes. As for diffraction, know waves going through big hole vs. little hole