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JEE Previous Year Question

$Wavenumber for a radiation having 5800 A \dots wavelength is x \times 10 cm^{- 1} . The value of x is_____ (Integer answer)$

Topic: JEE PYQ

Answer: 1724. Full step-by-step solution below.

Correct answer: 1724

Solution

(1724) v (wave no.) = \frac{1}{λ} = \frac{1}{5800 \times 10 ^{- 8} cm} = 17241 OR 1724 \times 10 cm^{- 1} \Rightarrow x = 1724

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