NEET Physics Atoms Questions Solved

An electron has a mass of 9.1×10-31 kg. It revolves round the nucleus in a circular orbit of radius 0.529×10-10 metre at a speed of 2.2×106 m/s. The magnitude of its linear momentum in this motion is

(a) 1.1×10-34 kg-m/s             (b) 2.0×10-24 kg-m/s 
(c) 4.0×10-24 kg-m/s           (d) 4.0×10-31 kg-m/s

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