Answer:
phase difference [tex]\Delta \Phi = 12.566[/tex]
Explanation:
Phase difference is expressed as [tex]\Delta \Phi[/tex]
[tex]\Delta \Phi =\frac {2\pi}{\lambda} \Delta X[/tex]
Where,
[tex]\Delta \Phi[/tex]= phase difference
[tex]\lambda[/tex] wavelength = 460nm
[tex]\Delta X[/tex] path difference = 920 nm
[tex]\Delta \Phi =\frac {2\pi}{460} *920 = 4\pi[/tex]
therefore
phase difference [tex]\Delta \Phi = 12.566[/tex]
