Question

22.
cumference of first Bohr's orbit of hydrogen atom is how many times the circumference
of second Bohr's orbit of He+?
(a) two times
(b) half
(c) equal
(d) none of these
​

Answer 1

cumference of first Bohr's orbit of hydrogen atom is how many times the circumference

cumference of first Bohr's orbit of hydrogen atom is how many times the circumferenceof second Bohr's orbit of He+?

ans :-(d) none of these