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JEE Advanced2014PhysicsElectromagnetic WavesActual

If λ c u is the wavelength of K α X-ray line of copper (atomic number 29) and λ M o is the wavelength of the K α X-ray line of molybdenum (atomic number 42), then the ratio λ c u λ M o is close to

Options

  1. A1.99
  2. B2.14
  3. C0.50
  4. D0.48

Correct answer

B. 2.14

Step-by-step solution

λ C u λ M o = Z M o - 1 Z C u - 1 2

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