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The orbital velocity of an electron in the ground state is v. If the electron is excited to energy state -0.54 eV, its orbital velocity will be

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detailed solution

Correct option is C

En=−13.6n2⇒n2=−13.6−0.54 or n2=25.2 or n=5 (nearly) As v∝1/n, so vn=v5

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