X-Ray

To produce characteristic X-rays using a Tungsten target in an X-ray generator, the accelerating voltage $V_{\mathrm{accelerating}}$ should be greater than ______ volts and the energy $\mathrm{E}$ of the characteristic radiation is ______ $\mathrm{eV}.$

(The binding energy of the innermost electron in Tungsten is $40 \mathrm{keV}$).

The waves emitted when a metal target is bombarded with high energy electrons are

The maximum Compton's shift in wavelength of the scattered $x$-ray beam is almost

Characteristic $X-$ rays of frequency $4.2\times {10}^{18} \mathrm{HZ}$ are produced, when transition from $L$ shell to $K$ shell take place in a certain material. Then atomic number of the target material is $\left(R=1.1\times {10}^7{ \mathrm{m}}^{-1}\right)$

What would the wavelength of the $K_{\beta }$ line emitted by a hydrogen-like element, if wavelength of the characteristic $X-$ray, $K_{\alpha }$ line emitted by it is $0.32 \stackrel{\circ }{\mathrm{A}}$.

If only $0.5\%$ of the energy supplied to a Coolidge tube is converted into $X-$ray beam, then calculate the energy carried by the $X-$rays, if the potential difference across the tube is $20 \mathrm{kV}$ and $10 \mathrm{mA}$ current flows through the voltage supply.

If a Coolidge tube is operated at potential difference of $40 \mathrm{kV}$, minimum wavelength of $X-$rays produced is:

The element which has a $K_{\alpha }$ $x$-rays line of wavelength $1.8\mathrm{\AA }$ is $\left(R=1.1\times {10}^7 {\mathrm{m}}^{-1}, b=1\right)$ and $\left.\sqrt{\frac{5}{33}}=0.39\right)$

If $\mathrm{Ni}$ (nical) is used as target material, then ${\lambda }_{\min }$ is minimum wavelength produced in $X$-ray tube and ${\lambda }_{k\alpha }$ is the wavelength of $k_{\alpha }$ line. If the operating tube voltage is increased and $Ca$ (calsium) is used as target material in place of $Ni,$ then the difference $\left|{\lambda }_{k\alpha }-{\lambda }_{\min }\right|$ will :

Electrons with de-Broglie wavelength $\lambda$ fall on the target in an X-ray tube. The cut-off wavelength of the emitted X-rays is

A student is jogging on a straight path with the speed $5.4 \mathrm{km}$ per hour. Perpendicular to the path is kept a pipe with its opening $8 \mathrm{m}$ from the road (see figure). Diameter of the pipe is $0.45 \mathrm{m}$ At the other end of the pipe is a speaker emitting sound of $1280 \mathrm{Hz}$ towards the opening of the pipes. As the student passes in front of the pipe, she hears the speaker sound for $T$ seconds. $T$ is in the range (take speed of sound, $320 {\mathrm{ms}}^{-1}$):

Electrons of mass $m$ with de Broglie wavelength $\lambda$ fall on the target in an $\mathrm{X}$-ray tube. The cut-off wavelength $\left({\lambda }_0\right)$ of the emitted $\mathrm{X}$-ray is

The speed of the colliding electron is increased in an $X$-ray tube, then

In a coolidge tube, the potential difference used to accelerate the electrons is increased from $12.4 \mathrm{kV}$  to $24.8 \mathrm{kV}.$ As a result the difference between ${\lambda }_{\mathrm{K}\alpha }$ and ${\lambda }_{\min }$ increases three fold. The wavelength of $K_{\alpha }$ line is - $\left(\frac{hc}{e}=12.4 \mathrm{kV} \stackrel{\mathrm{o}}{\mathrm{A}}\right)$

According to Mosley's law of characteristic $X-$ray. Which of the following is correct?

The ratio of wavelengths of $k_{\mathrm{\alpha }}$ $X$-ray from two elements is $4$. If the atomic number of heavier element is $55$, then the other element is,

The wavelength of $K_{\alpha }$ line from an element of atomic number $51$ is $\lambda$. From another element the wavelength of $K_{\alpha }$ line is $4\lambda$. What is the atomic number of second element?
 

Consider a photon of continuous $X$-ray and a photon of characteristics $X$-ray of the same wavelength. Which of the following is different for the two photons?

On increasing the filament current in $X$-ray tube :-