A proton moving with 25% of the velocity of light is having a mass of 1.6 × 10-24g. What is the de Broglie wavelength associated with the proton?

m=1.6×10−24gV=3×1010 cm sec-1 ×25100=0.75×1010cm sec -1The de Broglie wavelength associated with the proton is =6.626×10−27 ergsec⁡1.6×10−24×0.75×1010=5.52×10−13 cm