Question

Show that for rutherford scattering, twice as many particles are scattered through an angle between 60 and 90 as are scattered through angles of 90 or more.

Answer 1

For Rutherford scattering

So as we see
I₂=2I₁,
this means that twice as many particles are scattered through an angle between 60 and 90 as are scattered through angles of 90 or more(up to 180 degrees ).