An electron accelerated from rest through 100 V has de Broglie wavelength of order:
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Question

An electron accelerated from rest through 100 V has de Broglie wavelength of order:

G1 Physics · Accepted Answer

Using λ(Å) = 12.27/√V for electrons, λ = 12.27/√100 = 1.227 Å ≈ 1.2 Å. Answer: D.