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Questions  >>  JEEMAIN and NEET  >>  NEET PAST PAPERS  >>  2001
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Q)

The energy of hydrogen atom in $n^{th}$ orbit is $E_n$ then the energy in nth orbit of singly ionised helium atom will be : -


( A ) $E_n/2$
( B ) $2E_n$
( C ) $E_n/4$
( D ) $4 E_n$

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