The kinetic energy of a moving electron is 50 {kJ}. If the de-Broglie wavelength associated with the electron motion is expressed as y \times 10^{-z} {m}, and the value of z is 20 . What is the value of (y+z) ? [Assume that m_{e}=9 \times 10^{-31} {kg} and {h}=6.6 \times 10^{-34} {Js}]

JEE Advanced 2020 Full Test 4 Paper 2

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The kinetic energy of a moving electron is 50kJ. If the de-Broglie wavelength associated with the electron motion is expressed as y×10−zm, and the value of z is 20. What is the value of (y+z)?
[Assume that me=9×10−31kg and h=6.6×10−34Js]

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