- #1
CAH
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Hi I've attached the question and mark scheme,
I don't understand part 6(d)... Why have they used sin90?
nλ=dsinθ
If there is another order beam how can it be known the angel at which it exists from the zero order?
Thanks
I don't understand part 6(d)... Why have they used sin90?
nλ=dsinθ
If there is another order beam how can it be known the angel at which it exists from the zero order?
Thanks