d
\(\mu \,\, = \,\,1.45\,,\,\,n\,\, = \,\,5\,,\,\,\lambda \,\, = \,\,5890\,\,\, \times \,\,1{0^{ - 10}}\,m\,,\,\,x\,\, = \,\,5\beta \)

શલાકા ની શિફ્ટ \(x\,\, = \,\,\,\frac{\beta }{\lambda }\,\,(\mu  - 1)\,\,t\,\,\,\,\, \Rightarrow \,\,\,5\,\beta \,\, = \,\,\frac{{\beta \,\,(0.45)}}{{5890\,\, \times \,\,{{10}^{ - 10}}}}\,\,t\)

\(t\,\, = \,\,\frac{{5\,\, \times \,\,5890\,\, \times \,\,{{10}^{ - 10}}}}{{0.45}}\,\, = \,\,\,6.55\,\, \times \,\,{10^{ - 6}}\,\,m\)