A green laser (wavelength = 495 nm) creates a horizontal diffraction pattern whe

Question

A green laser (wavelength = 495 nm) creates a horizontal diffraction pattern when it passes through a single slit.... (See below)

There is also a part C: Given the first minima do occur at +/- 22.0 cm, determine the distance from the slit to the viewing screen. (Answer in meters.)

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Map A green laser( 495 nm) creates a horizontal diffraction pattern when it passes through a single slit (as 4.50 m) Answer the three questions using three significant figures Io Part A: What is the orientation of the slit? O vertical O horizontal O There's no way to know Part B: You can see from the intensity graph that the first minima occur around ±22 cm Suppose that in your experiment, you needed the the first minima to occur around ±30 cm Select all the options that could make this adjustment happen -40 -20 0 20 40 y (cm) Somehow make the slit narrower somehow make the slit wider Decrease the distance from the slit to the viewing screen Increase the distance from the slit to the viewing screen somehow decrease the wavelength of the light somehow increase the wavelength of the light Change the orientation of the slit

Explanation / Answer

A. Vertical as diffracion pattern is horizontal

B. formula for first minima = L*D/ d where L is the wavelength D is screenlength d is slit width

For increasing first minima Options 1,4,5,6 are valid

C.Using formula first minima = L* D/ d

Therefore D= 0.2 m

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