posted by Anonymous on .
In a double-slit experiment, it is found that blue light of wavelength 460 nm gives a second-order maximum at a certain location on the screen. What wavelength of visible light would have a minimum at the same location?
For constructive interference
For destructive interference of the other light, we have
When the two angle are equal, then
l=1.84x103 nm for m’=0
l=613 nm for m’=1
l=368 nm for m’=2
The only wavelength here that is visible is 613 nm