Question

An electron is accelerated through a potential difference of 10,000 V. Its de Broglie wavelength is, ______.

(nearly) (m_e= 9 x 10^-31 kg)

पर्याय

• 12.2 x 10^-14 m

• 12.2 nm

• 12.2 x 10^-13 m

• 12.2 x 10^-12 m

Answer 1

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