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menco
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Homework Statement
Two light sources half a millimetre apart with a wavelength of 550nm shine on a wall exactly 50cm away. What is the distance between the centre point on the wall and the 10th bright spot out?
Homework Equations
x=nLv/d
The Attempt at a Solution
x=10x0.5x(5.5x10^-7)/0.0005
= 0.0055m = 5.5mm