Question

in youngs double slit experiment ,slit width are in the ratio 1:25
the ratio of I max:Imin =?

Answer 1

$$\begin{gathered} Theratioofmaximumandminimumintensityisgivenby \\ \frac{I_{max}}{I_{min}}=\frac{{\left(a+b\right)}^2}{{\left(a-b\right)}^2}=\frac{{\left(25+1\right)}^2}{{\left(25-1\right)}^2}=1.17 \end{gathered}$$