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NEET2008PhysicsAtomic PhysicsActual

Assertion : It is essential that all the lines available in the emission spectrum will also be available in the absorption spectrum. Reason : The spectrum of hydrogen atom is only absorption spectrum.

Options

  1. AIf both assertion and reason are true and reason is the correct explanation of assertion
  2. BIf both assertion and reason are true but reason is not the correct explanation of assertion
  3. CIf assertion is true but reason is false
  4. DIf both assertion and reason are false.

Correct answer

D. If both assertion and reason are false.

Step-by-step solution

Emission transitions can take place between any higher energy level and any energy level below it while absorption transitions start from the lowest energy level only and may end at any higher energy level. Hence number of absorptions transitions between two given energy level. Hence number of absorptions transitions between two given energy levels is always less than the number of emission transitions between the same two levels.

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