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If lambda(K(alpha)), lambda(K(beta)) a...

If `lambda_(K_(alpha)), lambda_(K_(beta))` and `lambda_(L_(alpha))` are the wavelengths of `K_(alpha), K_(beta)` and `L_(alpha)`, lines respectively , then

A

`lambda_(K_(beta)) = (lambda_(K_(alpha)) lambda_(L_(alpha)))/(lambda_(K_(alpha)) + lambda_(L_(alpha)))`

B

`lambda_(L_(alpha)) = (lambda_(K_(alpha)) lambda_(K_(beta)))/(lambda_(K_(alpha)) + lambda_(K_(beta)))`

C

`lambda_(L_(alpha)) = (lambda_(K_(alpha))lambda_(K_(beta)))/(lambda_(K_(beta)) + lambda_(K_(alpha)))`

D

none of these

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The correct Answer is:
A
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