Question

( (-infty) quad n quad rightarrow quad frac{k(z e) e}{m=u} )
[
begin{array}{l}
r_{n}^{2}=frac{2 k(z e) c}{1} frac{1}{2} n_{n}=frac{k(z e) e}{k-ell}
gamma_{n} alpha(z e)
end{array}
]
Ca will have lass no. If protons

# (AJ 4.8 TU' Ung (BJU.J/kg ) 4.8 % 10C/kg (D) 8 x 10-20 C/kg a-particles are projected towards the nucleus of following metals, with the same kinetic energy. The distance of closest approach will be minimum for which metal? (A) Cu (A (B) Ag (C) Au (D) Ca

Solution