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In figure find which is K(a) and K(beta)...

In figure find which is `K_(a) and K_(beta)`

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`DeltaE=(hc)/(lambda), lambda=(hc)/(DeltaE)`
since energy difference of `K_(alpha)` is less than `K_(beta)`
`1` is `K_(beta)` and `2` is `K_(alpha)`
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