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Physics - Modern Physics Question with Solution | TestHub

PhysicsModern PhysicsAtomic structureMedium2 minPYQ_2016

PhysicsMediumsingle choice

Given the value of Rydberg constant is $10^{7} m^{- 1}$ , the wave number of the last line of the Balmer series in hydrogen spectrum will be:NEET 2016 (Phase 1)

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Answer:

Solution:

$\frac{1}{λ} = R (\frac{1}{n_{1}^{2}} - \frac{1}{n_{2}^{2}})$
Here, $[n_{1} = 2, n_{2} = \infty]$
Wavelength $= \frac{1}{λ} = R [\frac{1}{2^{2}}] = \frac{R}{4} = \frac{10^{7}}{4} = 0.25 \times 10^{7} m^{- 1}$

Stream:NEETSubject:PhysicsTopic:Modern PhysicsSubtopic:Atomic structure

⏱ 2mℹ️ Source: PYQ_2016

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