A proton and an alpha particle have the

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Target Exam

CUET

Subject

Physics

Chapter

Dual Nature of Radiation and Matter

Question:

A proton and an alpha particle have the same de-Broglie's wavelength. What is same for both of them?

Options:

Velocity

Energy

Charge

Momentum

Correct Answer:

Momentum

Explanation:

The correct answer is Option (4) → Momentum

De Broglie wavelength, $λ=\frac{h}{P}$

where P is momentum and h = Planck Constant

∴ if $λ_1=λ_2$ [given]

then ⇒ $P_1=P_2$ ⇒ Momentum is same for both