Q: As the electron in Bohr orbit of Hydrogen atom passes from state n = 2 to n = 1 , the kinetic energy K and potential energy U change as
(a) K two-fold, U four-fold
(b) K four-fold, U two-fold
(c) K four-fold, U also four-fold
(d) K two-fold, U also two-fold
Ans: (c)