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XJellieBX
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Homework Statement
Monochromatic light of wavelength [tex]\lambda[/tex] = 400 nm enters at A. It impinges on a ‘half-silvered mirror’ B, which directs some of the light to mirror C, while passing the rest to mirror D. Some of the reflected light from mirror C passes back through the half-silvered mirror, where it combines with reflected light from D, arriving at the detector. Mirror C is attached to a micrometer, so that it can be moved to change the path length B − C − B.
If mirror C is moved through 10 microns (1 micron is 10−6 m), how many maxima will be
observed at the detector? Assume that the intensity at D is intially a minimum.
Homework Equations
D(x,t)=asin(kx-wt+[tex]\phi_{0}[/tex]
The Attempt at a Solution
I'm actually not sure how to approach this to begin with, so any advice is appreciated. I've also attached a copy of the diagram. I'm thinking this might have something to do with the path length being x1 and x2