A particle of charge $q$, mass $m$ enters in a region of magnetic field $B$ with velocity $V_0 \widehat i$. Find the value of $d$ if the particle emerges from the region of magnetic field at an angle $30^o$ to its ititial velocity:-
$\frac{mv_o}{2qB}$
$\frac{mv_o}{qB}$
$\frac{mv_o}{3qB}$
$\frac{mv_o}{4qB}$
A charged particle of mass $m$ and charge $q$ travels on a circular path of radius $r$ that is perpendicular to a magnetic field $B$. The time taken by the particle to complete one revolution is
An electron is moving along the positive $x$-axis. If the uniform magnetic field is applied parallel to the negative $z$-axis. then
$A.$ The electron will experience magnetic force along positive $y$-axis
$B.$ The electron will experience magnetic force along negative $y$-axis
$C.$ The electron will not experience any force in magnetic field
$D.$ The electron will continue to move along the positive $x$-axis
$E.$ The electron will move along circular path in magnetic field
Choose the correct answer from the options given below:
Which of the following particle will describe the smallest circle when projected with the same velocity perpendicular to the magnetic field ?
An electron and a proton enter region of uniform magnetic field in a direction at right angles to the field with the same kinetic energy. They describe circular paths of radius ${r_e}$ and ${r_p}$ respectively. Then
A rectangular region of dimensions ( $\omega \times l(\omega) \ll l$ ) has a constant magnetic field into the plane of the paper as shown in the figure below. On one side, the region is bounded by a screen. On the other side, positive ions of mass $m$ and charge $q$ are accelerated from rest and towards the screen by a parallel plate capacitor at constant potential difference $V < 0$ and come out through a small hole in the upper plate. Which one of the following statements is correct regarding the charge on the ions that hit the screen?