Question

The wavelength of light from spectral emission line of sodium is 590nm. find the kinetic energy at which the electron would have same de broglie wavelength​

Answer 1

Hey mate,...

Solution :

Ek=h22λ2m

=(6.63×10−34)22×(590×10−9)2×1.66×10−27

=3.81×10−28J

Hope it will help you

Answer 2

$\huge\bf{Answer:-}$

Refer the attachment.