Question

The cyclotron frequency of an electron gyrating in a magnetic field of 1 T is approximately:

• A. $28MHz$
• B. $2.8MHz$
• C. $2.8GHz$
• D. $28GHz$

Answer 1

The correct option is D $28GHz$

Cyclotron of frequency, $v=\frac{Bq}{2\pi m}$
$=\frac{1\times 1.6\times {10}^{-19}}{2\pi \times 9.1\times {10}^{-31}}$
$=2.8\times {10}^{10}Hz$
$=28GHz$