Calculating Fringe Distance with Multiple Wavelengths and Slit Spacing

[Christina]

Two slits are 0.158 mm apart. A mixture of red light wavelength = 665 nm and yellow green light wavelength = 565 nm falls on the slits. A flat observation screen is located 2.24 m away What's the distance on the screen between the third order red fringe and the third order yellow green fringe?

Thanks

 

[dicerandom]

What have you tried to start out with?

 

[neo143]

d is given
D is give
wavelenghts are given
what else you want to solve this problem :-)

 

[Christina]

What formula used for this problem neo143? I'm studying for the physics replacement and there are 15 sample problems

Thank you,
Christina