The second-order bright fringe in a single-
slit diffraction pattern is 1.47 mm from the
center of the central maximum. The screen is
73.4 cm from a slit of width 0.779 mm.
Assuming monochromatic incident light,
calculate the wavelength.
Answer in units of nm

Question

The second-order bright fringe in a single-
slit diffraction pattern is 1.47 mm from the
center of the central maximum. The screen is
73.4 cm from a slit of width 0.779 mm.
Assuming monochromatic incident light,
calculate the wavelength.
Answer in units of nm

gebooors · Answer

Use equation d sin A = k lambda

Lambda Is wavelength
k  =2
Convert d in metres

Calculate A with tan A = 1.47 mm / 734 mm

anonymous · Answer

which distance would I use? because I got 2.24188*10^-7