1. Tardigrade
  2. Question
  3. Physics
  4. A beam of α particles having specific charge 2.5×107 C kg-1 moves with a speed of 2×105 ms-1 in a magnetic field of 0.05 T. The radius of the circular path described by the α-particle is

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. A beam of $\alpha$ particles having specific charge $2.5\times10^7\,C\,kg^{-1}$ moves with a speed of $2\times10^5\,ms^{-1}$ in a magnetic field of $0.05\, T$. The radius of the circular path described by the $\alpha$-particle is

Solution:

R = $\frac{M \, v}{B_{q0}} = \frac{v}{B} ( \frac{q_0}{M}) $
$= 2 \times 10^5 / 0.05 \times 2.5 \times 10^7$ = 0.16 m = 16 cm.