Modern Physics: PLS HELP!! (short) Find width of slit in single slit...

G

Gege

New member
...diffraction experiment given...? Find width of slit in single slit diffraction experiment given,

Electron speed passing through slit=100m/s
Angle of deflection=5degrees
(This is for second minimum)

I thought..
dsin(pheta)=m(lambda) for minimum m=1,2,3 ( for this question m=2)
so, dsin(5)=2(lambda)
Then I am stuck...what do I do with speed to solve for d???

PPLS HELP!!!! THANKS
 
Back
Top