Calculate the wavelength of an electron moving with a velocity of 2.05×10 7 ms −1

Explanation

We are given that
Velocity of electron `= 2. 05 xx 10 ^(7) ms ^(-1)`
We are to find out the wave lengthof an electron
We know that
According to de-Broglie equation `lamda = ( h)/( mv)`
`lamda = ( 6.62 xx 10 ^(-34))/( 9.1 xx 10 ^(-31) k g xx 2. 05 xx 10 ^(7) ms ^(-1)) kg m ^(2) s ^(-1)`
`lamda = 3.55 xx 10 ^(-11) m.`