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Determine de-Broglie wavelength of an el...

Determine de-Broglie wavelength of an electron having kinetic energy of ` 1. 6 xx 10 ^(-6)` erg. `(m_c = 9. 11 xx 10^(-28) g, h= 6.62 xx 10^(-27) erg -sec )`.

A

662

B

1324

C

`66.2`

D

`6.62`

Text Solution

Verified by Experts

The correct Answer is:
A
`E = hv = (hc)/(lambda)` or `lambda = (hc)/(E)`
`:. lambda = (6.62 xx 10^(-27) xx 3)/(3 xx 10^(-12))`
`= 6.62 xx 10^(-5) cm = 662 cm`
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