Answer:
Wavelength, [tex]\lambda=1.04\times 10^{-13}\ m[/tex]
Explanation:
It is given that,
Velocity of an electron, [tex]v=7\times 10^6\ m/s[/tex]
Mass of an electron, [tex]m=9.1\times 10^{-28}\ kg[/tex]
We need to find the wavelength of an electron. It can be calculated using the De- Broglie wavelength as :
[tex]\lambda=\dfrac{h}{mv}[/tex]
[tex]\lambda=\dfrac{6.63\times 10^{-34}}{9.1\times 10^{-28}\times 7\times 10^6}[/tex]
[tex]\lambda=1.04\times 10^{-13}\ m[/tex]
So, the wavelength of an electron is [tex]1.04\times 10^{-13}\ m[/tex]. Hence, this is the required solution.
