KVPY SB SX Exam 2011 Question Paper

Question : 37 of 120

Marks: +1, -0

Due to transitions among its first three energy levels, hydrogenic atom emits radiation at three discrete wavelengths

λ_1,λ_2

. and

λ_3(λ_1 < λ_2 < λ_3)

. Then

Solution:

{hc}/λ_1={hc}/λ_2+{hc}/λ_3

1/λ_1 =1/λ_2+ 1/λ_3

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