- #1
nso09
- 19
- 0
Homework Statement
##d=0.52 cm,## ##\lambda=431nm##, ##L=119 m##
Homework Equations
##dsin\theta=(m+1/2)\lambda## for constructive/bright fringes since there is a pi shift already
The Attempt at a Solution
a) $$sin\theta\leq1$$
$$(.0052/431e-9)-0.5=m=12064$$ 2 \e{3}
$$ total bright fringes = 2m = 24129$$
However, I am extremely confused on why my solutions sets ##d=.0052(2)## which gives ##m=24129## from the get go.
Isn't there a mirror underneath? I don't know where this solution is coming from which is messing up my numbers for parts b and c. Is there something I'm missing? The main thing that I don't get is why ##d=.0104m##
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