(B) According to Moseley's Law,the frequency $(f)$ of the characteristic $X-$rays emitted by an element is related to its atomic number $(Z)$ by the e

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(B) According to Moseley's Law,the frequency $(f)$ of the characteristic $X-$rays emitted by an element is related to its atomic number $(Z)$ by the equation: $f = a(Z - b)^2$,where $a$ and $b$ are constants.For high atomic numbers,$b$ is negligible,so $f \propto Z^2$.Therefore,the frequency of characteristic $X-$rays varies with the square of the atomic number.

Class 12 Physics Atoms X-Rays

Easy

Solid targets of different elements are bombarded by highly energetic electron beams. The frequency $(f)$ of the characteristic $X-$rays emitted from different targets varies with atomic number $Z$ as

AIIMS 2005 All AIIMS

A
$f \propto \sqrt{Z}$
B
$f \propto Z^2$
C
$f \propto Z$
D
$f \propto Z^{3/2}$

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The wavelength of ${K_{\alpha }}$ $X$-rays produced by an $X$-ray tube is $0.76 \, \mathring{A}$. The atomic number of the anticathode material is:

Difficult

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Calculate the wavelength of the $K_{\alpha}$ line for $Z=31$, when $a=5 \times 10^7 \, Hz^{1/2}$ for a characteristic $X$-ray spectrum.

MediumAP EAMCET 2011

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The energy of a photon of light with wavelength $5000 \, \mathring{A}$ is approximately $2.5 \, eV$. In this way,the energy of an $X$-ray photon with wavelength $1 \, \mathring{A}$ would be:

Easy

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An $X$-ray has a wavelength of $0.010 \mathring{A}$. Its momentum is

Easy

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In the characteristic $X$-ray spectra of an atom superimposed on a continuous $X$-ray spectrum, identify the peaks $P$ and $Q$ shown in the graph.

Medium

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Solid targets of different elements are bombarded by highly energetic electron beams. The frequency $(f)$ of the characteristic $X-$rays emitted from different targets varies with atomic number $Z$ as

Similar Questions

The wavelength of ${K_{\alpha }}$ $X$-rays produced by an $X$-ray tube is $0.76 \, \mathring{A}$. The atomic number of the anticathode material is:

Calculate the wavelength of the $K_{\alpha}$ line for $Z=31$, when $a=5 \times 10^7 \, Hz^{1/2}$ for a characteristic $X$-ray spectrum.

The energy of a photon of light with wavelength $5000 \, \mathring{A}$ is approximately $2.5 \, eV$. In this way,the energy of an $X$-ray photon with wavelength $1 \, \mathring{A}$ would be:

An $X$-ray has a wavelength of $0.010 \mathring{A}$. Its momentum is

In the characteristic $X$-ray spectra of an atom superimposed on a continuous $X$-ray spectrum, identify the peaks $P$ and $Q$ shown in the graph.

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