\(f_n=\frac{R_1^2}{n \lambda}=\frac{f_1}{n}\)

the first three maxima

\(f_1=\frac{(0.15cm)^2}{(1)(5.5*10^{-5}cm)}=409cm\)

\(f_3=\frac{f_1}{3}=\frac{409cm}{3}=136cm\)

\(f_5=\frac{f_1}{5}=\frac{409cm}{5}=81.8cm\)

the first three minima

\(f_2=\frac{f_1}{2}=\frac{409cm}{2}=204.5cm\)

\(f_4=\frac{f_1}{4}=\frac{409cm}{4}=102cm\)

\(f_6=\frac{f_1}{6}=\frac{409cm}{6}=68.1cm\)