Question

For a certain multiple-slit barrier the slit separation is 4 times the slit width. For this system:
A) the orders of the lines that appear are all multiples of 4
B) the orders of the lines that appear are all multiples of 2
C) the orders of the missing lines are all multiples of 4
D) the orders of the missing lines are all multiples of 2
E) none of the above are true

Answer

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