Question

Why are matter waves significant only in the motion of extremely small particles?

• A. Small particles have smaller mass and hence the de Broglie wavelength increases
• B. Small particles are manageable easily
• C. Small particles possess small kinetic energy
• D. Extremely small particles possess small relativistic mass

Answer 1

The correct option is A Small particles have smaller mass and hence the de Broglie wavelength increases

$\lambda =\frac{h}{mv}$

Smaller particles have larger wavelength and more wave like character.