Physics - Modern Physics Question with Solution | TestHub

$\mathrm{\Delta }\mathrm{E}={\mathrm{E}}_2-{\mathrm{E}}_1$

$10.2\hspace{0.17em}\hspace{0.17em}\mathrm{e}\mathrm{V}=-3.4\hspace{0.17em}\hspace{0.17em}\mathrm{e}\mathrm{V}+13.6\hspace{0.17em}\hspace{0.17em}\mathrm{e}\mathrm{V}$

This is possible only when

${\mathrm{E}}_2-3.4\mathrm{ }\mathrm{e}\mathrm{V}$and

${\mathrm{E}}_1=-13.6\hspace{0.17em}\mathrm{e}\mathrm{V}$

This mean${\mathrm{n}}_2=2$&${\mathrm{n}}_1=1$

$\mathrm{\Delta }L=\frac{2h}{2\pi }-\frac{h}{2\pi }=\frac{h}{2\pi }=\frac{6.63\times {10}^{-34}}{2\times 3.14}\mathrm{J}\mathrm{ }\mathrm{s}$

$=1.05\times 10^{–34}\mathrm{J}\mathrm{s}$