Energy levels {\A}, {\B} and {\C} of a certain atom correspond to increasing values of energy i.e. {\E}_{ {\A}}< {\E}_{ {\B}}< {\E}_{ {\C}}. If \lambda_{ {\I}}, \lambda_2 and \lambda_3 are wave lengths of radiations corresponding to transitions {\C} to {\B}, {\B} to {\A} and {\C} to {\A} respectively, which of the following relations is correct -

Correct Answer is : λ3=λ1λ2λ1+λ2

\lambda_1+\lambda_2+\lambda_3=0

\lambda_3^2=\lambda_1^2+\lambda_2^2

\lambda_3=\frac{\lambda_1 \lambda_2}{\lambda_1+\lambda_2}

AIPMT 2005 Physics and Chemistry Paper

Question : 46 of 100

Marks: +1, -0

Energy levels A,B and C of a certain atom correspond to increasing values of energy i.e. EA<EB<EC. If λI,λ2 and λ3 are wave lengths of radiations corresponding to transitions C to B, B to A and C to A respectively, which of the following relations is correct -

λ3=λ1+λ2
λ1+λ2+λ3=0
λ32=λ12+λ22
λ3=‌
λ1λ2
λ1+λ2

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