NEET Questions Solved

NEET - 2012

An αparticle moves in a circular path of radius 0.83 cm in the presence of a magnetic field of 0.25 Wb/m2.The de-Broglie wavelength associated with the particle will be 

(a) 1 A0                                                   (b) 0.1 A0

(c) 10 A0                                                 (d) 0.01 A0

We knows

     R=mvqB

and λ=hmv

     λ=hqBR

       =6.6×10-341.6×10-19×0.83×10-2×0.25

       =0.01A0

Difficulty Level:

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