Question

The wavelength associated with an electron moving with velocity 10^10ms-1 is

Answer 1

Answer: $0.72\times 10^{-13}m$

Explanation:

According to De broglie wavelength equation:

Formula used : $\lambda=\frac{h}{m\times v}$

where,

$\lambda$ = wavelength  = ?

h = Planck's constant = $6.626\times 10^{-34}Js$

m = mass  of electron =$9.1\times 10^{-31}kg$

v = velocity  of electron =$10^{10}ms^{-1}$

Now put all the given values in this formula, we get

$\lambda=\frac{6.626\times 10^{-34}Js}{9.1\times 10^{-31}kg\times 10^{10}ms^{-1}}=0.72\times 10^{-13}m$

The wavelength associated with an electron moving with velocity $10^{10}ms^{-1}$ is $0.72\times 10^{-13}m$