A physicist was performing experiments to study the effect of varying voltage on the velocity and wavelength of the electrons. In one case, the electron was accelerated through a potential difference of 1kV and in the second case, it was accelerated through a potential difference of 2kV In order to have half the velocity in the second case than in the first case, the potential applied should be

A physicist was performing experiments to study the effect of varying

1.	A physicist was performing experiments to study the effect of varying voltage on the velocity and wavelength of the electrons. In one case, the electron was accelerated through a potential difference of 1kV and in the second case, it was accelerated through a potential difference of 2kV In order to have half the velocity in the second case than in the first case, the potential applied should be
Answer» <html><body><p>0.5 <a href="https://interviewquestions.tuteehub.com/tag/kv-1063110" style="font-weight:bold;" target="_blank" title="Click to know more about KV">KV</a><br/>2kV<br/>0.25 kV<br/>0.75 kV</p>Solution :We <a href="https://interviewquestions.tuteehub.com/tag/want-1448756" style="font-weight:bold;" target="_blank" title="Click to know more about WANT">WANT</a> to have `(v_(2))/(v_(1)) = (1)/(2) " i.e., " ((1)/(2) mv_(2)^(2))/((1)/(2) mv_(1)^(2)) = (1)/(<a href="https://interviewquestions.tuteehub.com/tag/4-311707" style="font-weight:bold;" target="_blank" title="Click to know more about 4">4</a>)` <br/> i.e., `("Potential applied in case II")/("Potential applied in case I") = (1)/(4)` <br/> or Potential applied in case `II = (1)/(4) xx 1kV` <br/> = 0.25 kV</body></html>