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Wave Optics
Question
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The transition from the state n = 3 to n=1 in a hydrogen-like atom results in ultraviolet radiation. Infrared radiation will be obtained in the transition from.

  • 2→ 1 

  • 3 →2

  • 4 → 2

  • 4 →3

Answer

D.

4 →3

Infrared radiation is found in Paschen, Brackett and pfund series nd it is obtained when electron transition occurs from high energy level to minimum third level.

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