The de Broglie wavelength of 1 mg grain of sand blown by a 20 ms-1 wind is:

Question

The de Broglie wavelength of 1 mg grain of sand blown by a 20 ms-1 wind is: (A) 3.3 × 10 - 29 m (B) 3.3 × 10-21 m (C) 3.3 × 10-19 m (D) 3.3 × 10-42 m

Tardigrade Admin · Accepted Answer

λ=(h/mv)=(6.626×10-34/1×10-6×20) = 3.13×10-29m

Q. The de Broglie wavelength of $1 m g$ grain of sand blown by a $20 m s^{- 1}$ wind is: