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a) A double slit experiment is with 450 nm light and two narrow slits which are...

a) A double slit experiment is with 450 nm light and two narrow slits which are 0.5 mm apart. At what angle to the straight through beam will be one observe:

i. the third order bright fringe.
ii. the second minimum from the central maximum.

b) By drawing appropriate diagrams, show the differences between intensity or pattern for double slits intereference and single slit diffration

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