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 The wavelength associated with the electron will beA. double in the second case than in the first caseB. double in the first case than in the second caseC. 1.4 times in the second case than in the first caseD. 1.4 times in the first case than in the second case

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 The wavelength associated with the electron will beA. double in the second case than in the first caseB. double in the first case than in the second caseC. 1.4 times in the second case than in the first caseD. 1.4 times in the first case than in the second case
Answer» Correct Answer - D `lamda = (h)/(mv) :. (lamda_(1))/(lamda_(2)) = (v_(2))/(v_(1)) = 1.4, " i.e., " lamda_(1) = 1.4 lamda_(2)`

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