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Atoms and Nuclei question

2005 · Q145
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Atoms and Nuclei question

2005 · Q145

NEETPhysicsAtoms and NucleiMCQ+4 / −1
Energy levels A, B and C of a certain atom corresponding to increasing values of energy i.e. EA < EB < EC. If λ\lambdaλ1, λ\lambdaλ2 and λ\lambdaλ3 are wavelengths of radioations corresponding to transitions C to B, B to A and C to A respectively, which of the following relations is correct?
  1. A
    λ3=λ1+λ2{\lambda _3} = {\lambda _1} + {\lambda _2}λ3​=λ1​+λ2​
  2. B
    λ3=λ1λ2λ1+λ2{\lambda _3} = {{{\lambda _1}{\lambda _2}} \over {{\lambda _1} + {\lambda _2}}}λ3​=λ1​+λ2​λ1​λ2​​
  3. C
    λ1+λ2+λ3=0{\lambda _1} + {\lambda _2} + {\lambda _3} = 0λ1​+λ2​+λ3​=0
  4. D
    λ32=λ12+λ22{\lambda _3}^2 = {\lambda _1}^2 + {\lambda _2}^2λ3​2=λ1​2+λ2​2
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