Question

8. What is the de Broglie wavelength of
an electron, whose kinetic energy is
120 eV ?
(Given: m = 9.11 x 10-31 kg,
h = 6.63 x 10-34 Js, 1eV = 1.6 x 10-19 J)
(A) 100 nm (B) 0.112 nm
(C) 0.5 nm (D) 0.8 nm​

Answer 1

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