The de-Broglie's wavelength of a ball of mass 120 g moving at a speed of 20 m/s is

Chemistry · JEE Main · NTA Exams — Atomic Structure

1. 3.5 x 10^-34 m
2. 2.8 x 10^-34 m
3. 1.2 x 10^-34 m
4. 2.1 x 10^-34 m

Answer

(B) 2.8 x 10 -34 m

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