PhysicsNEET 2019Matter waves and de Broglie wavelength

Dual Nature of Radiation and Matter

An electron is accelerated through a potential difference of 10,000 V. Its de Broglie wavelength is, nearly: ( $m_{e} = 9 \times 1 0^{- 31}$ kg)

A. $12.2 \times 1 0^{- 13}$ m
B. $12.2 \times 1 0^{- 12}$ m✓
C. $12.2 \times 1 0^{- 14}$ m
D.12.2 nm

You have the answer. The worked solution — and why the other three were written — is part of a paid pack.

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Last revised 7 Sept 2026. Found a mistake? Tell us — corrections are the fastest thing we act on.

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