Question

derive debroglies wave equation​

Answer 1

Because real particles do not travel at the speed of light, De Broglie submitted velocity (v) for the speed of light (c). Through the equation λ, de Broglie substituted v/λ for ν and arrived at the final expression that relates wavelength and particle with speed

Answer 2

Apply the de Broglie wave equation λ=hmv λ = h m v to solve for the wavelength of the moving electron. ... This very small wavelength is about 1/20th of the diameter of a hydrogen atom. Looking at the equation, as the speed of the electron decreases, its wavelength increases..

main part of de broglies wave equation

λ = h/mv, where λ is wavelength, h is Planck's constant, m is the mass of a particle, moving at a velocity v. de Broglie suggested that particles can exhibit properties of waves.