Download App

STD 12 - 4. Moving charges and magnetism — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 12 - 4. Moving charges and magnetism4 Marks
Question
Two particles $\mathrm{X}$ and $\mathrm{Y}$ having equal charges are being accelerated through the same potential difference. Thereafter they enter normally in a region of uniform magnetic field and describes circular paths of radii $R_1$ and $R_2$ respectively. The mass ratio of $\mathrm{X}$ and $\mathrm{Y}$ is :
✓

Answer

$ \mathrm{R}=\frac{\mathrm{mv}}{\mathrm{qB}}=\frac{\mathrm{p}}{\mathrm{qB}}=\frac{\sqrt{2 \mathrm{~m}(\mathrm{KE})}}{\mathrm{qB}}=\frac{\sqrt{2 \mathrm{mqV}}}{\mathrm{qB}} $

$ \mathrm{R} \propto \sqrt{\mathrm{m}}$

$ \mathrm{m} \propto \mathrm{R}^2 $

$ \frac{\mathrm{m}_1}{\mathrm{~m}_2}=\left(\frac{\mathrm{R}_1}{\mathrm{R}_2}\right)^2$

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

Explore more

NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

When the velocity of body is variable, then
→
The current in the following circuit is ........... $A$
→
What is minimum length of a tube, open at both ends, that resonates with tuning fork of frequency $350 Hz$ ? [velocity of sound in air $= 350 m/s$]  ..... $cm$
→
The forward biased diode connection is
→
In the given circuit, charge $Q_2$ on the $2\ μF$ capacitor changes as $C$ is varied from $1\ μF$ to $3\ μF$. $Q_2$ as a function of '$C$' is given properly by: (figures are drawn schematically and are not to scale)
→
Three particles, each of mass $m\; gram$, are situated at the vertices of an equilateral triangle $ABC$ of side $l\;cm$ (as shown in the figure). The moment of inertia of the system about a line $AX$ perpendicular to $A B$ and in the plane of $A B C,$ in $gram-cm^{2}$ units will be
→
The moment of inertia of a regular circular disc of mass $0.4\, kg$ and radius $100\, cm$ about an axis perpendicular to the plane of the disc and passing through its centre is ...... $kg\, m^2$
→
In an $npn$ transistor, $108$ electrons enter the emitter in $10^{-8}$ second. If $1\%$ electrons are lost in the base, the fraction of current that enters the collector and current amplification factor are respectively
→
A particle of mass $10\, g$ is kept on the surface of a uniform sphere of mass $100 \,kg $ and radius $10\, cm$. Find the work to be done against the gravitational force between them to take the particle far away from the sphere $($you may take $G = 6.67 \times {10^{ - 11}}\,N{m^2}/k{g^2})$
→
A body thrown vertically up with initial velocity $52 \,m / s$ from the ground passes twice a point at $h$ height above at an interval of $10 \,s$. The height $h$ is .........$m$ $\left(g=10 \,m / s ^2\right)$
→