Question

Calculate de-Broglie wavelength when `e^(-)` is accelerated by the following voltage.
(i) `750V` (ii) `300` volt

Answer 1

(i) `" "lambda=sqrt((150)/(V))Å" "=sqrt((150)/(750))Å=(1)/sqrt(5)Å " "(ii)" "lambda=sqrt((150)/(300))Å=(1)/(sqrt(2))Å`