Question

The de-broglie wavelength associated with particle of mass $10^{-6} kg$ moving with a velocity of $10 m / sec$ is:

• A. $6.63 \times 10^{-7} m$
• B. $6.63 \times 10^{-16} m$
• C. $6.63 \times 10^{-21} m$
• D. $6.63 \times 10^{-29} m$

Answer 1

Answer: (D)

According to de-Broglie equation

$\lambda=\frac{ h }{ mv }=\frac{6.63 \times 10^{-34}}{10^{-6} \times 10}$

$\Rightarrow \frac{6.63 \times 10^{-34}}{10^{-5}}$

$=6.63 \times 10^{-29} m$