Verified Solution • 2025–26 Session moderate

QAIPMT-2005-Ph-2546: NEET 2005 Physics - Class 12 AIPMT-2005-Ph-2546 Solution: Energy levels A, B and C of a certain atom corresponding to…

Energy levels A, B and C of a certain atom corresponding to increasing values of energy i.e. EA<EB<ECE_A<E_B<E_C. If λ1\lambda_1, λ2\lambda_2 and λ3\lambda_3 are wavelengths of radiations corresponding to transitions C to B, B to A and C to A respectively, which of the following relations is correct?

Multiple Choice Options

  • A λ3=λ1+λ2\lambda_3=\lambda_1+\lambda_2
  • B λ3=λ1λ2λ1+λ2\lambda_3=\frac{\lambda_1\lambda_2}{\lambda_1+\lambda_2}
  • C λ1+λ2+λ3=0\lambda_1+\lambda_2+\lambda_3=0
  • D λ32=λ12+λ22\lambda_3^2=\lambda_1^2+\lambda_2^2

Step-by-Step Verified Solution

_ (E C � E B ) + (E B � E A ) = (E C � E A ) _ h c _ 3 = h c _ 1 + h c _ 2 _ _ 3 = _ 1 _ 2 _ 1 + _ 2

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