Atomic StructureHard
Question
A parallel beam of electrons travelling in x-direction falls on a slit of width d (see figure). If after passing the slit, an electron acquires momentum py in the y-direction then for a majority of electrons passing through the slit (h is Planck′s constant) :A parallel beam of electrons travelling in x-direction falls on a slit of width d (see figure). If after passing the slit, an electron acquires momentum py in the y-direction then for a majority of electrons passing through the slit (h is Planck′s constant) :
Options
A.|py| d > h
B.|py| d >> h
C.|py| d < h
D.|py| d ≃ h
Solution
d sin θ = λ.
sin θ =
< 1
λ < d
< d
h < |py| d
Option (1)
sin θ =
< 1λ < d
< dh < |py| d
Option (1)
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