According to Sommerfeld, an electron revolves round a nucleus in
A
circular orbits
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B
elliptical orbits
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C
hyperbolic orbits
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D
none of these
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Solution
The correct option is B elliptical orbits
According to Sommerfeld, an electron revolves round a positively charged nucleus in elliptical orbit with nucleus situated at one of focii. Bohr's model assumes circular orbit which is a special case of elliptical orbit.