Practice Another An electron microscope is designed to resolve objects as small as 0.28 nm. What energy electrons (in ev) must be used in this instrument? 0.487 0.487 ev Check Score Hide Answer Try Another An electron microscope is designed to resolve objects as small as 0.35 nm. What energy electrons (in ev) must be used in this instrument? eV Need Help? Read It Submit AnswerFrom momentum uncertainty, we have the relation (Ap ) = h 27 (Ax) Now the expression for uncertainty in energy is, (AE) = 2m (AE) = 1 h 2m 27 (Ax) h2 = 8ma- (Ax) (6.626 x10 34 J .s ) = 87 (9.1x10 3 kg )(0.35x10 9'm = (4.988 x10-20 leV 1.6 x10-19 = 0.312 eV