Yellow light emitted from a sodium lamp has a wavelength $(\lambda)$ of $580 \mathrm{~nm}$. Calculate the frequency (v) and wave number ( $\bar{v})$ of the yellow light.

$4.27 \times 10^{14} \mathrm{~s}^{-1}, 3.245 \times 10^4 \mathrm{~cm}^{-1}$

$1.26 \times 10^{15} \mathrm{~s}^{-1}, 8.37 \times 10^3 \mathrm{~cm}^{-1}$

$51.7 \times 10^{14} \mathrm{~s}^{-1}, 1.724 \times 10^5 \mathrm{~cm}^{-1}$

JEE CHEMISTRY MCQ: STRUCTURE OF ATOM

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Yellow light emitted from a sodium lamp has a wavelength

(\lambda)

580 \mathrm{~nm}

. Calculate the frequency (v) and wave number (

\bar{v})

of the yellow light.

View answer and explanation

Correct option: A

5.17 \times 10^{14} \mathrm{~s}^{-1}, 1.724 \times 10^4 \mathrm{~cm}^{-1}

Option A (

5.17 \times 10^{14} \mathrm{~s}^{-1}, 1.724 \times 10^4 \mathrm{~cm}^{-1}

) is correct because it accurately calculates the frequency and wave number using the given wavelength and the speed of light.