JEE CHEMISTRY MCQ: STRUCTURE OF ATOM

1 Medium

1 of 1

Application +4 | -1

A dye emits

50 \%

of the absorbed energy as fluorescence. If the number of quanta absorbed and emitted out is in the ratio

1: 2

and it absorbs the radiation of wavelength '

x

\mathop {\text{A}}\limits^ \circ

, then the wavelength of the emitted radiation will be

View answer and explanation

Correct option: C

4 x\,\mathop {\text{A}}\limits^ \circ

Option C (

4 x\,\mathop {\text{A}}\limits^ \circ

) is correct because the emitted wavelength is four times the absorbed wavelength, derived from the energy and quantum ratio relationship.

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n^{\text {th }}

\mathrm{A}

\times 10^{12}

\frac{1}{{ }^{\prime} \mathrm{B}^{\prime}}

\ell = 1,\,\,m = 0

1.25 \times {10^{ - 13}} \times {A^{1/3}}\mathrm{cm}.