Question

O- An electron has 2.8x10 -²³ j/KE than find de broglie wavelength ​

Answer 1

Answer:

Let KE denote Kinetic energy,

KE=

2

1

mv

2

∴v=

m

2KE

⟹mv=

2mKE

Now, λ=

mv

h

…[De-broglie wavelength]

λ=

2mKE

h

=

2×9.1×10

−31

×2.8×10

−23

6.6×10

−23

=9.2455×10

−7

m