- #1

JoeyBob

- 256

- 29

- Homework Statement:
- See attached

- Relevant Equations:
- d1-d2=wavelength(n-1/2)

So I can calculate wavelenghth using v/f to get 6.24. Now I made d1=sqrt(4.6^2+d^2) and d2=d so my equation now looks like

sqrt(4.6^2+d^2)-d =6.24(n-1/2). To find n I made d=0

4.6=6.24(n-1/2) n=1.24

Now my problem is that I don't know which n to use or if I've even done the above correctly. It could be 0.24(wavelength), 0.74(wavelength), 1.24(wavelength) ect.

Furthermore the correct answer is d=1.83 which is indicative of n=1 which isn't what i calculated.

sqrt(4.6^2+d^2)-d =6.24(n-1/2). To find n I made d=0

4.6=6.24(n-1/2) n=1.24

Now my problem is that I don't know which n to use or if I've even done the above correctly. It could be 0.24(wavelength), 0.74(wavelength), 1.24(wavelength) ect.

Furthermore the correct answer is d=1.83 which is indicative of n=1 which isn't what i calculated.