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The quantity [(nh)/(2 pi qB)]^(1/2) wher...

The quantity `[(nh)/(2 pi qB)]^(1/2)` where `n` is a positive integer, `h` is Planck's constant, `q` is charge and `B` is magnetic field, has the dimensions of
(1) time
(2) speed
(3) length
(4) acceleration

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