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AP EAMCET202017 Sep 2020Morning ShiftChemistryStructure of AtomActual

Calculate the wave number and frequency of orange radiation having wavelength (6300 Å ).

Options

  1. A(1.587 10^8 ~m ⁻¹, 4.761 10¹⁶ ~s ⁻¹ )
  2. B(1.587 10^4 ~m ⁻¹, 4.761 10¹⁴ ~s ⁻¹ )
  3. C(1.587 10^6 ~m ⁻¹, 4.761 10¹⁴ ~s ⁻¹ )
  4. D(1.587 10^6 ~m ⁻¹, 4.761 10¹⁶ ~s ⁻¹ )

Correct answer

C. (1.587 10^6 ~m ⁻¹, 4.761 10¹⁴ ~s ⁻¹ )

Step-by-step solution

For orange radiation (EMR) of ( =6300 Å ) (i) Wave number, ( v = 1 = 1 6300 Å = 1 6300 10⁻¹⁰ ~m ) (=1.587 10^6 ~m ⁻¹ ) (ii) Frequency, ( aligned v & = c = 3 10^8 ~m ~s ⁻¹ 6300 10⁻¹⁰ ~m & =4.761 10¹⁴ ~s ⁻¹ aligned )

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