Question

A wave is associated with matter when it is:

• A. stationary
• B. in motion with a velocity
• C. in motion with velocity of light
• D. in motion with velocity greater than that of light

Answer 1

The correct option is B in motion with a velocity

The relationship between de Broglie wavelength $\left(\lambda \right)$ and the momentum (p) of a photon is given by:
$\lambda =\frac{h}{p}$.
So a wave is associated with matter when it is in motion i.e. it is in a motion with a velocity.