Question

12. An electron enters a region of magnetic field
perpendicularly with a speed of 3 x 107 ms.
Strength of magnetic field is 6x10-4 T. Frequency
and energy of electron respectively are
(a) 2 MHz, 25 keV
(b) 20 MHz, 2.5 keV
(c) 20 MHz, 25 keV
1.6816
12
U=3x107
:
B = 6410-4
(d) 2 MHz, 2.5 keV
ab
drim
TUX​

Answer 1

Answer:

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Explanation:

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