Question

What quantity, combined with universal physical quantities, can be used to determine a particle's de Broglie wavelength

Answer 1

Answer:

The quantity that will be combined to determine a particle's de Broglie wavelength is ENERGY.

Explanation:

Energy of a particle is given by;

E = hf

Where;

f is frequency of the particle's wave = c/λ

$E = \frac{hc}{\lambda}$

$\lambda= \frac{hc}{E}$

Where;

λ is the  particle's de Broglie wavelength

h is the Planck's constant = 6.626 x 10⁻³⁴ J/s (This is one of the universal physical quantities)

c is the speed of light, = 3 x 10⁸ m/s (This is also one of the universal physical quantities)

E is the energy of the particle.

Therefore, the quantity that will be combined to determine a particle's de Broglie wavelength is ENERGY.