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The de - Broglie wavelength of an electr...

The de - Broglie wavelength of an electron having `80 ev` of energy is nearly
`( 1eV = 1.6 xx 10^(-19) J`, Mass of electron ` = 9 xx 10^(-31) kg` Plank's constant ` = 6.6 xx 10^(-34) J - sec`)

A

`140 Å`

B

`0.14 Å`

C

`14 Å`

D

`1.4 Å`

Text Solution

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The correct Answer is:
D
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