In the Rutherford scattering experiment, what will be the correct angle for $\alpha$ scattering for an impact parameter $b=0$?

Answer the following question, which helps you understand the difference between Thomson’s model and Rutherford’s model better.

Is the average angle of deflection of $\alpha -$ particles by a thin gold foil predicted by Thomson’s model much less, about the same, or much greater than that predicted by Rutherford’s model?

Answer the following question, which helps you understand the difference between Thomson’s model and Rutherford’s model better.

Is the probability of backward scattering (i.e., scattering of $\alpha -$ particles at angles greater than $90°$) predicted by Thomson’s model much less, about the same, or much greater than that predicted by Rutherford’s model?

Answer the following question, which helps you understand the difference between Thomson’s model and Rutherford’s model better.

Keeping other factors fixed, it is found experimentally that for small thickness $t$, the number of  $\alpha$-particles scattered at moderate angles is proportional to $t$. What clue does this linear dependence on $t$ provide?