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  • For x-rays coming from a Coolidge tube, consider the following statements: A. product of cutoff wavelength and accelerating voltage is a constant B. <img alt="\lambda\left(\math

For x-rays coming from a Coolidge tube, consider the following statements:

A. product of cutoff wavelength and accelerating voltage is a constant

B. \lambda\left(\mathrm{K}_\alpha\right) is smaller than \lambda\left(\mathrm{K}_\beta\right)
 

Option: 1

A and B both are true

 


Option: 2

A is true but B is false
 


Option: 3

A is false but B is true
 


Option: 4

A and B both are false


Answers (1)

best_answer

Here \mathrm{\frac{c h}{\lambda_{\text {cut off }}}=e (acc. voltage)}

So, \mathrm{\left(\lambda_{\text {cut off }}\right)( acc. voltage )=\frac{c h}{e}= constant .}

so, (A) is correct

Here \mathrm{\lambda\left(K_\alpha\right)=\frac{c h}{E\left(K_\alpha\right)}>\frac{c h}{E\left(K_\beta\right)}=\lambda\left(K_\beta\right)}

\therefore (B) is false.

Hence correct option is (B)

 

Posted by

Ajit Kumar Dubey

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