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AP EAMCET201825 Apr 2018Morning ShiftChemistryStructure of AtomActual

The ratio of de Broglie wave lengths of two particles, having mass ratio 1 : 3 and kinetic energy ratio 2 : 1 is

Options

  1. A3 :   2
  2. B3 : 2
  3. C2 : 3
  4. D2 :   3

Correct answer

B. 3 : 2

Step-by-step solution

λ = h 2 mKE m a m b = 1 3     ;     KE a KE b = 2 1 λ a λ b = m b   × KE b m a × KE a = 3 × 1 1 × 2 = 3 2 .....

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