MCQ
$X-$ rays are produced due to
  • A
    Break up of molecules
  • Changing in atomic energy level
  • C
    Changing in nuclear energy level
  • D
    Radioactive disintegration

Answer

Correct option: B.
Changing in atomic energy level
b
For $x-$ Rays

$\lambda=\frac{h c }{\Delta E }$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Work of moderator is
A spherical soap bubble has in ternal pressure $P_0$ and radius $r_0$ and is in equilibrium in an enclosure with pressure ${P_1} = \frac{{8{P_0}}}{9}$ . The enclosure is gradually evacuated . Assuming temperature and surface tension of soap bubble to be fixed find the value of $\frac{{{\rm{final\,\, radius}}}}{{{\rm{initial\,\, radius}}}}$ of soap bubble
A projectile is fired at an angle of $45^\circ $ with the horizontal . Elevation angle of the projectile at its highest point as seen from the point of projection, is
A charged particle is projected in a plane perpendicular to a uniform magnetic field. The area bounded by the path described by the particle is proportional to
$7$ mole of certain monoatomic ideal gas undergoes a temperature increase of $40 K$ at constant pressure. The increase in the internal energy of the gas in this process is$....J$ (Given $R =8.3 JK ^{-1} mol ^{-1}$ )
Two hollow spheres each of mass $M$ and radius $\frac {R}{2}$ are connected with a massless rod of length $2R$ as shown in figure. What will be the moment of inhertia of the system about an axis $yy'$ passing through the center of one of the sphere and perpendicular to the rod
The speed of a body moving with uniform acceleration is $u$. This speed is doubled while covering a distance $S$. When it covers an additional distance $S$, its speed would become
In a single slit diffraction pattern, a light of wavelength $6000 \mathring A$ is used. The distance between the first and third minima in the diffraction pattern is found to be $3 \mathrm{~mm}$ when the screen in placed 50 $\mathrm{cm}$ away from slits. The width of the slit is ______________$\times 10^{-4} \mathrm{~m}$
The $SI$ unit of the inductance, the henry cannot be written as
Two point charges $ + 3\,\mu C$ and $ + 8\,\mu C$ repel each other with a force of $40\,N$. If a charge of $ - 5\,\mu C$ is added to each of them, then the force between them will become....$N$