What is the de Broglie wavelength of a 0.40 kg object moving at 25 m/s? A) 0.40 kg objects don't have wavelengths B) 10 m C) 0.10 m D) 6.6 × 10⁻³⁵ m E) 0.53 × 10⁻¹⁰ m

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Quizplus · Accepted Answer

The de Broglie wavelength, λ, of an object is given by λ = h / (mv), where h is Planck's constant (6.626 × 10^-34 m^2 kg / s), m is the mass of the object, and v is its velocity. Substituting the given values (m = 0.40 kg, v = 25 m/s) into the formula gives λ ≈ 6.6 × 10^-35 m, which matches choice D.

What Is the De Broglie Wavelength of a 0