The scale along the bottom of the figure is in centimeters. What is the distance

Question

The scale along the bottom of the figure is in centimeters. What is the distance2x1between the first minima in the intensity pattern? (Units required, and you must be within 1 mm to be correct.)

2x1=3.2cm

The slit-to-screen distance isD=1.400m, and the laser wavelength is 633nm, use the formula for single-slit diffraction minima to find the slit widtha. (Units required.)

a = _______ nm

If the screen to slit distance were changed to 0.350m, what would the distance between the first minima2x1become? (Units required.)

Explanation / Answer

The distance between the slit would be Lambda*D/a 1.2*10^-2=633*10^-9*1.40/a a=10^-5*6.33*1.4/1.2 a=0.0738mm w1/w2=1.40/0.35 1.2/x=4cm x=0.3cm

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