The de-Broglie wavelength of an electron having 80 {\eV} energy is nearly (1 {\eV}=1.6 \times 10^{-19} {\J}., Mass of the electron =9 \times 10^{-31} {\kg}, Planck's constant =6.6 \times 10^{-34} {\J}-s)

EAMCET Engineering 2001 Solved Paper

Section: Physics

Question : 27 of 200

Marks: +1, -0

The de-Broglie wavelength of an electron having 80‌eV energy is nearly (1‌eV=1.6×10−19J.,
Mass of the electron =9×10−31‌kg,
Planck's constant =6.6×10−34J-s)

140Å
0.14Å
14Å
1.4Å

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