The graph between the square root of the freq | vedclass

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(B) According to Moseley's law,the frequency $
u$ of a characteristic $X$-ray line is related to the atomic number $Z$ of the target material by the

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(B) According to Moseley's law,the frequency $
u$ of a characteristic $X$-ray line is related to the atomic number $Z$ of the target material by the equation: $\sqrt{
u} = a(Z - b)$,where $a$ and $b$ are constants.This equation represents a straight line of the form $y = mx + c$,where $y = \sqrt{
u}$,$x = Z$,$m = a$ (slope),and $c = -ab$ (y-intercept).Since $a$ and $b$ are positive constants,the $y$-intercept $c = -ab$ is negative.Therefore,the graph of $\sqrt{
u}$ versus $Z$ is a straight line that does not pass through the origin and has a negative $y$-intercept.

$1$. Burning candle	$i$. Line spectrum
$2$. Sodium vapour	$ii$. Continuous spectrum
$3$. Bunsen flame	$iii$. Band spectrum
$4$. Dark lines in solar spectrum	$iv$. Absorption spectrum

The graph between the square root of the frequency of a specific line of characteristic spectrum of $X$-rays and the atomic number of the target will be

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