Calculate de-Broglie wavelength of an electron having kinetic energy 2.8 × 1 0 - 23 J . m e = 9.1 × 1 0 - 31 k g

Question

Calculate de-Broglie wavelength of an electron having kinetic energy 2.8 × 1 0 - 23 J . m e = 9.1 × 1 0 - 31 k g, 9.28 × 1 0 - 4 m, 9.28 × 1 0 - 7 m, 9.28 × 1 0 - 8 m, 9.28 × 1 0 - 10 m

MARKS App · Accepted Answer

Formula for de-Broglie wavelength is λ = h p or λ = h m v ⇒ e V = 1 2 m v 2 or ν = 2 e V m λ = h 2 m e V = 6.62 × 1 0 - 34 2 × 9.1 × 1 0 - 31 × 2.8 × 1 0 - 23 = 9.28 × 1 0 - 8 m

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