JEE CHEMISTRY MCQ: STRUCTURE OF ATOM

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An electron is accelerated from a very low velocity (

\sim

zero speed) by the application of a potential difference of

\mathrm{V}

volts. If the de Broglie wavelength should change (i.e., decrease) by

1.0 \%

what percent increase in

\mathrm{V}

causes it-

View answer and explanation

Correct option: D

2 \%

Option D (2%) is correct because the de Broglie wavelength is inversely proportional to the square root of the potential difference.

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n^{\text {th }}

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