A alpha -parhticle moves in a circular ...

A `alpha` -parhticle moves in a circular path of radius `0.83 cm` in the presence of a magnetic field of `0.25 Wb//m^(2)`. The de-Broglie wavelength assocaiated with the particle will be

10 Å

0.1 Å

1 Å

`0.01 ` Å

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