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The K(infty) X-ray emission line of tung...

The `K_(infty)` X-ray emission line of tungsten occurs at `lambda = 0.021` nm.The energy difference between K and L levels in this atom is about

A

`0.51`MeV

B

`1.2` MeV

C

`59` keV

D

136 eV

Text Solution

Verified by Experts

The correct Answer is:
C
`E = (hc)/(lambda) = (6.6 xx 10^(-34)xx 3 xx 10^(8))/(0.021 xx 10^(-9)) eV = 589.3 xx 10^(2) eV approx 59 KeV`
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