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Question
An electron is accelerated through a potential difference of 10,000 V. Its de Broglie wavelength is, ______.
(nearly) (me= 9 x 10-31 kg)
Options
12.2 x 10-14 m
12.2 nm
12.2 x 10-13 m
12.2 x 10-12 m
MCQ
Fill in the Blanks
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Solution
An electron is accelerated through a potential difference of 10,000 V. Its de Broglie wavelength is, ______.
Explanation:
de Broglie wavelength,
`lambda = 12.27/ sqrt("V" ("in volts")`
= `12.27/ sqrt10000` Å
≈ `12.2 xx 10-12 m
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