Verified Solution • 2025–26 Session moderate

QNEET-2024-Ph-166: NEET 2024 Physics - Class 12 NEET-2024-Ph-166 Solution: Some energy levels of a molecule are shown in the figure with…

Some energy levels of a molecule are shown in the figure with their wavelengths of transitions. Then: λ3>λ2λ1=2λ2\lambda_3 > \lambda_2 \lambda_1 = 2\lambda_2 λ3>λ2λ1=4λ2\lambda_3 > \lambda_2 \lambda_1 = 4\lambda_2 λ1>λ2λ2=2λ3\lambda_1 > \lambda_2 \lambda_2 = 2\lambda_3 λ2>λ1λ2=2λ3\lambda_2 > \lambda_1 \lambda_2 = 2\lambda_3

Multiple Choice Options

  • A \lambda_3>\lambda_2, \lambda_1=2 \lambda_2 _ 3 _ > _ 2 _ , _ 1 _ = 2 _ 2 _
  • B \lambda_3>\lambda_2, \lambda_1=4 \lambda_2 _ 3 _ > _ 2 _ , _ 1 _ = 4 _ 2 _
  • C \lambda_1>\lambda_2, \lambda_2=2 \lambda_3 _ 1 _ > _ 2 _ , _ 2 _ = 2 _ 3 _
  • D \lambda_2>\lambda_1, \lambda_2=2 \lambda_3 _ 2 _ > _ 1 _ , _ 2 _ = 2 _ 3 _

Step-by-Step Verified Solution

h c _ 1 = _ 5 E 2 + 4 E = 3 2 E .... (1) h c _ 2 = _ 2 E + 3 E = E .... (2) h c _ 3 = _ 2 E + 4 E = 2 E .... (3) Comparing (2) and (3) 1 _ 3 = 2 _ 2 _ 2 = 2 _ 3 Comparing (1) and (2) 3 _ 1 = 2 _ 2 _ 1 < _ 2

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