An electron of mass 9.11x10^(-31) is fired from an electron gun at 7x10^6 m/s. What size object will the electron need to interact with in order to diffract?
Momentum of electron=mv=6.377x10^-24 kg m/s
λ=h/mv=6.63x10-34/6.377x10-24=1.039...x10-10=1x10-10m
JG
Related Physics A Level answers
All answers ▸Derive Keplers 3rd law
2 Capacitors (c1 = 500mf) and (c2=300mf), are connected in parallel to a 10v d.c supply. Calculate the total capacitance of the circuit, and hence the total energy stored in the capacitors.
A nucleus of the stable isotope Pb(208,82) has more neutrons than protons. Explain why there is this imbalance between proton and neutron numbers by referring to the forces that operate within the nucleus.
In the Photoelectric effect, Why does increasing the light intensity have no effect on the energy of the electron emitted?