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waves help

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AN10:
plz solve question no 5 of first variant paper attached below

vanibharutham:
For a wave to a have a minima, there must be destructive interference i.e. a phase difference of Pi radians...

However to detect a minima of ZERO, you must have a) A phase difference of Pi Radians b) Same Amplitude

AN10:
k i get it.... can u plz solve da second part too

AN10:
anyone ??? ???

astarmathsandphysics:
I will do it when I get home in 1 hour

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