Question 156: Magnetism and Matter

Question

A proton and an alpha particle of the same velocity enter in a uniform magnetic field which is acting perpendicular to their direction of motion. The ratio of the radii of the circular paths described by the alpha particle and proton is :

Accepted Answer

$R=\frac{m v}{q B}$
$\frac{\mathrm{R}_\alpha}{\mathrm{R}_{\mathrm{P}}}=\frac{\mathrm{M}_\alpha}{\mathrm{M}_{\mathrm{P}}} 	imes \frac{\mathrm{q}_{\mathrm{P}}}{\mathrm{q}_\alpha}$
$\frac{\mathrm{R}_\alpha}{\mathrm{R}_{\mathrm{P}}}=\frac{4}{1} 	imes \frac{1}{2}=2$

Answer

1 : 4

Answer

4 : 1

Answer

2 : 1

Answer

1 : 2

Magnetism and Matter

A proton and an alpha particle of the same velocity enter in a uniform magnetic field which is acting perpendicular to their direction of motion. The ratio of the radii of the circular paths described by the alpha particle and proton is :

Choose the correct answer: