Question

An electron beam can undergo diffraction by crystals. Though what potential should a beam of electrons be accelerated so that its wavelenght becomes equal to 1.54 Angestrom

Answer 1

Answer:

MEDIUM

Share

Study later

ANSWER

For an electron

2

1

mu

2

=eV; also λ=

mu

h

∴

2

1

m

m

2

λ

2

h

2

=eV

V=

2

1

mλ

2

e

h

2

V=

2×9.108×10

−31

×(1.54×10

−10

)

2

×1.602×10

−19

1×(6.626×10

−34

)

2

=63.44 volt

BRAINALIST