Question

An electron beam can undergo diffraction by crystals. Through what potential should a beam of electrons be accelerated so that its wavelength is equal to 1.6 A? (1)58.90 V (2)85.75 V (3)45.35 V (4)105.31 V​

Answer 1

Answer:

wavelength= h/√2meV

substitute the values n get d ans

h= 6.6×10^-34 J.s

e=1.6×10^-19 c

m= 9.1×10^-31 kg

Answer 2

Answer:

opt a} 58.9V

Explanation:

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