X - Rays

$X$-rays are produced

Which of the following is the wave length of X-ray:

Voltage applied across the X-ray tube is

Pressure inside the X-ray tube is :-

In X-ray tube, wavelength of X-ray is the characteristic of :-

The energy of characteristic $X-$rays photon obtained from Coolidge tube comes from:-

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

50% of X-rays obtained from a Coolidge tube pass through 0.3 mm. thick aluminium foil. If the potential difference between the target and the cathode is increased, then the fraction of X-rays passing through the same foil will be :-

Which of the following results is correct, if the potential difference between the anode and cathode of the $\mathrm{X}$-ray tube increases ?

The voltage applied to the Coolidge $\mathrm{X}$-ray tube is increased by $25\%$. As a result, the short wave limit of continuous $\mathrm{X}$-ray spectrum shifts by $\mathrm{\Delta }\mathrm{\lambda }$. The initial voltage applied to the tube is

Penetrating power of X-rays depends on

The potential difference applied to an X - ray tube is 5 kV and the current through it is 3.2 mA. The number of electrons striking the target per second is .............. (Take $e=1.6\times {10}^{-19} \mathrm{C}$)

If the potential difference applied across $X$-ray tube is $V$ volts, then approximately minimum wavelength of the emitted $X$-rays will be

Figure shows the intensity-wavelength relations of X-rays coming from two different Coolidge tubes. The solid curve represents the relation for the tube A in which the potential difference between the target and the filament is V_A and the atomic number of the target material is Z_A. These quantities are V_B and Z_B for the other tube. Then,

The $k$-line of singly ionized calcium has a wavelength of $393.3 \mathrm{nm}$ as measured on earth. In the spectrum of one of the observed galaxies, this spectral line is located at $401.8 \mathrm{nm}$. The speed with which the galaxy is moving away from us, will be

$K_{\alpha }$ and $K_{\beta }$ X-rays are emitted when there is a transition of electron between the levels

Energy of characteristic $X$-ray is a consequence of

The filament current in the electron gun of a coolidge tube is increased while the potential difference used to accelerate the electrons is decreased. As a result, in the emitted radiation

The wavelength of $X-rays$ lies between

A potential difference of ${10}^3 \mathrm{V}$ is applied across an X - rays tube. The ratio of the de-Broglie wavelength of the incident electrons to the shortest wavelength of X - rays produced is  ($\frac{\text{e}}{\text{m}}=1\text{.}8\times 10^4$ C/kg for an electron)