# Calculate the wavelength (in nanometer) associated with

Question:

Calculate the wavelength (in nanometer) associated with a proton moving at $1.0 \times 10^{3} \mathrm{~ms}^{-1}$ (Mass of proton $=1.67 \times 10^{-27} \mathrm{~kg}$ and $\mathrm{h}=6.63 \times 10^{-34} \mathrm{Js}$ ) :-

1. $2.5 \mathrm{~nm}$

2. $14.0 \mathrm{~nm}$

3. $0.032 \mathrm{~nm}$

4. $0.40 \mathrm{~nm}$

Correct Option: , 4

Solution: