(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

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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

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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After passing through a gold film of thickness $5 \times 10^{-3} \ m$,the intensity of an $X$-ray beam decreases to $36.8\%$ of its initial intensity. The absorption coefficient is ....... $m^{-1}$.

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For continuous $X-$rays,the minimum wavelength produced is:

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The wavelength of the $K_\alpha$ line for an element of atomic number $Z_1 = 29$ is $\lambda$. What is the wavelength of the $K_\alpha$ line for an element of atomic number $Z_2 = 15$? (Take Moseley's constant $b = 1$ for both elements.)

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$A$ metal block is exposed to beams of $X$-rays of different wavelengths. $X$-rays of which wavelength penetrate most?

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$X$-rays are produced in the laboratory by:

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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

After passing through a gold film of thickness $5 \times 10^{-3} \ m$,the intensity of an $X$-ray beam decreases to $36.8\%$ of its initial intensity. The absorption coefficient is ....... $m^{-1}$.

For continuous $X-$rays,the minimum wavelength produced is:

The wavelength of the $K_\alpha$ line for an element of atomic number $Z_1 = 29$ is $\lambda$. What is the wavelength of the $K_\alpha$ line for an element of atomic number $Z_2 = 15$? (Take Moseley's constant $b = 1$ for both elements.)

$A$ metal block is exposed to beams of $X$-rays of different wavelengths. $X$-rays of which wavelength penetrate most?

$X$-rays are produced in the laboratory by:

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