The de-Broglie wavelength of an electron having 80 eV of energy is nearly(Given 1 ev= 1.6 x 10⁻¹⁹ kg, Mass of electron=9 x 10⁻³¹ kg, Planck’s constant= 6.6 x 10⁻³⁴ J-sec)

Options

(a) 1.4 Å
(b) 14 Å
(c) 0.14 Å
(d) 140 Å

Correct Answer:

1.4 Å

Explanation:

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