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

Options

A. 28 MHz
B. 280 MHz
C. 2.8 GHz
D. 28 GHz

Answer

D

Explanation

`f = (qB)/(2pi m) = (1.6 xx 10^(-19) xx 1)/(2 xx 3.14 xx 9.1 xx 10^(-31))`
`implies f = 2.8 xx 10^(10)` Hz = 28 GHz.