The gravitational force between a H-atom and another particle of mass m will be given by Newton’s law F= G (M.m)/r^2 , where r is in km and

Q: The gravitational force between a H-atom and another particle of mass m will be given by Newton’s law F = G (M.m)/r² , where r is in km and

(a) M = m_proton + m_electron

(b) M = m_proton + m_electron -B/C² (B = 13.6 eV)

(c) M is not relate to the mass of the hydrogen atom.

(d) M = m_proton + m_electron -|V|/C² ; (|V| = magnitude of the potential energy of electron in the H-atom.

Ans: (b)