Who modified Bohrs theory by Introducing elliptical orbits for electron path?

Question

Who modified Bohrs theory by Introducing elliptical orbits for electron path? (A) Sommer field (B) Rutherford (C) Hund (D) Thomson

Tardigrade Admin · Accepted Answer

Sommerfeld modified Bohr's theory. According to him electrons move in elliptical orbits in addition to circular orbits.

Q. Who modified Bohrs theory by Introducing elliptical orbits for electron path?