Question

If the electron has a speed equal to 9.10 x 10^6 m/s, what is its wavelength?

Answer 1

Answer:

$\lambda=8.006\times 10^{-11}\ m$

Explanation:

Given that,

The speed of an electron, $v=9.1\times 10^6\ m/s$

We need to find the wavelength of this electron. It can be calculated using De -broglie wavelength concept as :

$\lambda=\dfrac{h}{mv}$

h is the Planck's constant

$\lambda=\dfrac{6.63\times 10^{-34}}{9.1\times 10^{-31}\times 9.1\times 10^6}$

$\lambda=8.006\times 10^{-11}\ m$

So, the wavelength of the electron is $8.006\times 10^{-11}\ m$. Hence, this is the required solution.