A hydrogen atom, initially in the ground | NUCLEAR PHYSICS

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JEE MAIN 2019

11-01-2019 S1

Question

A hydrogen atom, initially in the ground state is excited by absorbing a photon of wavelength $980 \\text { Å }$. The radius of the atom in the excited state, in terms of Bohr radius a0, will be ( $\mathrm{hc}=12500 \mathrm{eV}-\\text { Å })$

Select the correct option:

A

$4 a_0$

B

$9 a_0$

C

$25 a_0$

D

$16 a_0$

✓ Correct! Well done.

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