Question

1.)what is the frequency of the microwave whose wavelength is 1.60 cm?

2.) Alpha particles of charge q=+2e and mass m=6.6x10^-27 are emitted from a radioactive source at a speed of 1.6x10^10 m/s. What magnetic field strength would be required to bend them into a circular path of radius r=0.25?

Answer #1

1) frequency of the microwave = (3
* 10^{8})/(1.60 * 10^{-2})

= 1.875 * 10^{10} Hz

2) As, Radius = mv/qB

=> 0.25 = (6.6x10^{-27} *
1.6x10^{10})/(2 * 1.6 * 10^{-19} * B)

=> B = 1320 T

thus, magnetic field strength = 1320 T

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