1. The problem statement, all variables and given/known data
for part a , in order to produce first minima from the central bright ray , the path differenece between 2 ray should be equal to λ/2 or 180 degree am i right? why the notes give the path
differenece = λ
...If path differenece = λ , the two light ray are in phase right? how can destructive intefrence occur?
2. Relevant equations
3. The attempt at a solution
for part a , in order to produce first minima from the central bright ray , the path differenece between 2 ray should be equal to λ/2 or 180 degree am i right? why the notes give the path
differenece = λ
...If path differenece = λ , the two light ray are in phase right? how can destructive intefrence occur?
2. Relevant equations
3. The attempt at a solution
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