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[
begin{array}{l}R=frac{0.529 times n^{2}}{2} n=n_{0} text { of thin }end{array}
]
22 no of potor

# (C) 1:4 In an atom, two electrons move round the nucleus in circular orbits of radii R and 4R. The ratio of the time taken by them to complete one revolution is: (Consider Bohr model to be valid) (A) 1:4 (B) 4:1 (C) 1:8 (D) 8:1 Thonon fonolootron in aicon or it is

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