Question

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Find the wavelength of electron, if it's KE is $3 × 10^{-25}$ J and Mass is $9.1 × 10^{-31}$ kg.

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Answer 1

We have to find the de- broglie wavelength of the electron. ? Given conditions ⇒. Mass of the electron is 9.1 × 10 ⁻³¹ kg. K = 2.8 × 10⁻²³ J. Since,. K = 1/2 × m × v².

Answer 2

Since λ=h/√2×KE×m... De-broglie equation..

Solution is in the attachment...