[tex]Dane:\\U = 2 \ kV = 2\cdot10^{3} \ V\\e = 1,6\cdot10^{-19} \ C\\h = 6,63\cdot10^{-34} \ Js\\c = 3\cdot10^{8}\frac{m}{s}\\Szukane:\\\lambda = ?[/tex]
[tex]e\cdot U = h\cdot\frac{c}{\lambda} \ \ \ |\cdot \lambda\\\\e\cdot U\cdot \lambda = h\cdot c \ \ \ |:(e\cdot U)\\\\\lambda = \frac{h\cdot c}{e\cdot U}\\\\\lambda = \frac{6,63\cdot10^{-34} \ Js\cdot3\cdot10^{8}\frac{m}{s}}{1,6\cdot10^{-19} \ C\cdot2\cdot10^{3} \ V}\\\\\underline{\lambda = 6,2\cdot10^{-10} \ m}[/tex]
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[tex]Dane:\\U = 2 \ kV = 2\cdot10^{3} \ V\\e = 1,6\cdot10^{-19} \ C\\h = 6,63\cdot10^{-34} \ Js\\c = 3\cdot10^{8}\frac{m}{s}\\Szukane:\\\lambda = ?[/tex]
[tex]e\cdot U = h\cdot\frac{c}{\lambda} \ \ \ |\cdot \lambda\\\\e\cdot U\cdot \lambda = h\cdot c \ \ \ |:(e\cdot U)\\\\\lambda = \frac{h\cdot c}{e\cdot U}\\\\\lambda = \frac{6,63\cdot10^{-34} \ Js\cdot3\cdot10^{8}\frac{m}{s}}{1,6\cdot10^{-19} \ C\cdot2\cdot10^{3} \ V}\\\\\underline{\lambda = 6,2\cdot10^{-10} \ m}[/tex]