If T is the time required by electron in taking one round in an orbit, n represents the number of waves in an orbit, r represents the radius of orbit, then which have the value of 1/2 for 2^(nd) orbit of H and 4^(th) orbit of He^(+) ?

If T is the time required by electron in taking one round in an orbit,

1.	If T is the time required by electron in taking one round in an orbit, n represents the number of waves in an orbit, r represents the radius of orbit, then which have the value of 1/2 for 2^(nd) orbit of H and 4^(th) orbit of He^(+) ?
Answer» `(r_(2(H)))/(r_(4(He^(+))))` `(T_(2(H)))/(r_(4(He^(+))))` `(n_(2(H)))/(n_(4(He^(+))))` `(E_(2(H)))/(E_(4(He^(+))))` Answer :A::B::C