Question

If particles are moving with same velocity, then De-Broglie wavelength is maximum for :

• A. Proton
• B. $\alpha$-particle
• C. Neutron
• D. $\beta$-particle

Answer 1

Answer: (D)

$\beta$-particle

Answer 2

The correct option is (D) : $\beta$-particle
∵ λ = $\frac{h}{mv}$
∴ λ ∝ $\frac{1}{m}$