Q.

The wavelength of a spectral line emitted by hydrogen atom in the Lyman series is 1615R cm.  Calculate the value of n2. (R = Rydberg constant)

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a

3

b

4

c

2

d

1

answer is B.

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Detailed Solution

For Lyman series,1λ=R112-1n22⇒15R16=R112-1n2215R16R=n22-1n22⇒1516=n22-1n2215n22=16n22-16n22=16,n2=4
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