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The wavelenght of K(alpha) X-rays for le...

The wavelenght of `K_(alpha)` X-rays for lead isotopes `pb^(208),pb^(206),pb^(204)` are `lambda_(1),lambda_(2)` and `lambda_(3)` respectively . Then

A

`lamda_(1)=lamda_(2)=lamda_(3)`

B

`lamda_(1)gtlamda_(2)gtlamda_(3)`

C

`lamda_(1)ltlamda_(2)ltlamda_(3)`

D

`lamda_(2)=sqrt(lamda_(1)lamda_(3))`

Text Solution

Verified by Experts

The correct Answer is:
A, D
`lamda_(K_(2))=(4)/(3R(Z-1)^(2))`
`lamda_(1)=lamda_(2)=lamda_(3)`
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