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Some energy levels of a molecule are sh...

Some energy levels of a molecule are shown in the fig. The ratio of the wavelengths `r=lambda_(1)//lambda_(2)`, is given by

A

`r = 1/3`

B

`r = 4/3`

C

`r =2/3`

D

`r=3/4`

Text Solution

Verified by Experts

The correct Answer is:
A
`(-E) -(-2E)= (hc)/(lambda_(1)) " "…(i)`
`(-E) -(-4/3E) =(hc)/(lambda_(2)) " "…(ii)`
By equation (ii)/(i)
`(4/3-1)/(2-1) =(lambda_(1))/(lambda_(2)),(lambda_(1))/(lambda_(2))=1/3 .`
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