sinT= lambda/a
a= lambda/sinT
Isn't TanT=.0044/2.75 ? Since this is a very small angle, sinT appx= tanT
calculate slit width a.
When violet light of wavelength 415 nm falls on a single slit, it creates a central diffraction peak that is 8.80 cm wide on a screen that is 2.75 m away. How wide is the slit?
1 answer