SamTsui86
Apr19-07, 01:16 AM
1. The problem statement, all variables and given/known data
A diffraction pattern is produced on a screen 130 cm from a single slit, using monochromatic light of wavelength 460 nm. The distance from the center of the central maximum to the first-order maximum is 2.20 mm. Calculate the slit width. (Hint: Assume that the first-order maximum is halfway between the first- and second-order minima.)
2. Relevant equations
y1 = L sin (theta) = L (wavelength / a)
3. The attempt at a solution
wavelength = 460 e -9 m
L = .13 m
y = .0022 m
so I found a
.0022 = .13 sin (theta)
sin (theta) = .0169 = (wavelength/ a)
a = .0272 mm
How anyone tell me what I am doing wrong?
A diffraction pattern is produced on a screen 130 cm from a single slit, using monochromatic light of wavelength 460 nm. The distance from the center of the central maximum to the first-order maximum is 2.20 mm. Calculate the slit width. (Hint: Assume that the first-order maximum is halfway between the first- and second-order minima.)
2. Relevant equations
y1 = L sin (theta) = L (wavelength / a)
3. The attempt at a solution
wavelength = 460 e -9 m
L = .13 m
y = .0022 m
so I found a
.0022 = .13 sin (theta)
sin (theta) = .0169 = (wavelength/ a)
a = .0272 mm
How anyone tell me what I am doing wrong?