A-level Physics · Wave-particle duality

de Broglie wavelength

Find λ = h/p for an electron accelerated through a pd, a moving electron or proton, or a ball.

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Question 1

An electron, initially at rest, is accelerated through a potential difference of 500 V. Calculate the de Broglie wavelength of the electron. Use h = 6.63×10−346.63 \times 10^{-34} J s, e = 1.60×10−191.60 \times 10^{-19} C and the electron mass m = 9.11×10−319.11 \times 10^{-31} kg. Give your answer to 3 significant figures.

m

You can type 4.53, 3.2e-5, 3.2 × 10^-5 or 7/3.

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