The cyclotron frequency of an electron grating in a magnetic field of $1\, T$ is approximately
AIIMS 2004, Medium
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(d) Cyclotron frequency $v = \frac{{Bq}}{{2\pi m}}$
$ \Rightarrow v = \frac{{1 \times 1.6 \times {{10}^{ - 19}}}}{{2 \times 3.14 \times 9.1 \times {{10}^{ - 31}}}} = 2.79 \times {10^{10}}{H_z}$
$ = 27.9 \times {10^9}HZ \cong \;28\;GHz$
$ \Rightarrow v = \frac{{1 \times 1.6 \times {{10}^{ - 19}}}}{{2 \times 3.14 \times 9.1 \times {{10}^{ - 31}}}} = 2.79 \times {10^{10}}{H_z}$
$ = 27.9 \times {10^9}HZ \cong \;28\;GHz$
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