Assertion : Cyclotron does not accelerate electron.
Reason : Mass of the electrons is very small
A
If the Assertion is correct but Reason is incorrect.
B
If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
C
If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
D
If both the Assertion and Reason are incorrect.
AIIMS 2000, Easy
Download our app for free and get started
C
If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
c Cyclotron does not accelerate electron because mass of electron is very small. It gets accelerated very appreciably as a result of which its mass increases. It result is mismatch between frequency of $a.c.$ used and frequency of rotation of electron in the Dee’s. So cyclotron stops accelerating electrons after some time.
Download our app
and get started for free
Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*
A rectangular coil (Dimension $5\,cm\times 2\,cm$ ) with $100\,turns,$ carrying a current of $3\,A$ in the clock-wise direction, is kept centered at the origin and in the $X-Z$ plane. A magnetic field of $1\,T$ is applied along $X-$ axis. If the coil is tilted through $45^o$ about $Z-$ axis, then the torque on the coil is.....$Nm$
A charged particle of mass $m$ and charge $q$ describes circular motion of radius $r$ in a uniform magnetic field of strength $B$. The frequency of revolution is
An electron is moving along the positive $X$-axis. You want to apply a magnetic field for a short time so that the electron may reverse its direction and move parallel to the negative $X$-axis. This can be done by applying the magnetic field along
A semi circular arc of radius $r$ and a straight wire along the diameter, both are carrying same current $i.$ Find out magnetic force per unit length on the small element $P$, which is at the centre of curvature.
The figure shows three situations when an electron with velocity $\vec v$ travels through a nuniform magnetic field $\vec B$ . In each case, what is the direction of magnetic force on the electron?
A rectangular region $A B C D$ contains a uniform magnetic field $B_0$ directed perpendicular to the plane of the rectangle. A narrow stream of charged particles moving perpendicularly to the side $AB$ enters this region and is ejected through the adjacent side $B C$ suffering a deflection through $30^{\circ}$. In order to increase this deflection to $60^{\circ}$, the magnetic field has to be
A current carrying closed loop in the form of a right angle isosceles triangle $ABC$ is placed in a uniform magnetic field acting along $AB.$ If the magnetic force on the arm $BC$ is $\vec F,$ the force on the arm $AC$ is