A set of narrow vertical slits is located a distance D from a screen. All the slits have the same width, equal to 35.1 μm. The intensity pattern in the figure is observed when light from a laser passes through the slits, illuminating them uniformly. How many slits are illuminated?
I got 4 slits are illuminated, which is correct.
But then it goes on to say, "the maximum intensity observed on the screen is 1.88 W/m2. If one of the slits is covered up, what would the intensity on the screen at the center of the pattern become?"
Attempt at solution:
I_max = 1.88W/m^2
I_diffraction = I_max(cos^2((2)(pi)(m)
...I was only able to think of what equations I might but now I am unsure. Can someone please help me in what to do next?
4 answers