Question

In Rutherford scattering experiment, the number of α-particles scattered at 60° is 5 × 10⁶. The number of α-particles scattered at 120° will be(a) 15 × 10⁶(b) $\frac{3}{5}$ × 10⁶(c) $\frac{5}{9}$ × 10⁶(d) None of these

Answer 1

5×10^12 is the no of atoms