JEE PHYSICS MCQ: ATOMS

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Let

E_n=\frac{-1}{8 \varepsilon_0^2 n^2 h^2}

be the energy of the

n

th level of

{H}

-atom. If all the

{H}

-atoms are in the ground state and radiation of frequency

\left(E_2-E_1\right) / h

falls on it then

View answer and explanation

Correct option: B

Some of atoms will move to the first excited state

Option B is correct because some of the atoms will absorb the radiation and move to the first excited state.

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n

=2

{n}=1

\lambda_0

\lambda_0

{R_H} = 1.097\,\, \times \,\,{10^7}\,\,m