Series limit of the Balmer series: frequency, wave number or the constant in Balmer's formula

1. A.
   $4Rc$
2. B.
   $\frac{4}{Rc}$
3. C.
   $Rc$
4. D.
   $\frac{Rc}{4}$

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1. A.
   $250$ m$^{-1}$
2. B.
   $2.5 \times 10^6$ m$^{-1}$
3. C.
   $0.25 \times 10^9$ m$^{-1}$
4. D.
   $2.5 \times 10^5$ m$^{-1}$

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1. A.
   $\frac{RC}{4}$
2. B.
   $RC$
3. C.
   $4RC$
4. D.
   $\frac{4}{RC}$

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1. A.
   $4Rc$
2. B.
   $\dfrac{4}{Rc}$
3. C.
   $Rc$
4. D.
   $\dfrac{Rc}{4}$

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1. A.
   $\dfrac{R}{4}$
2. B.
   $\dfrac{4}{R}$
3. C.
   $2R$
4. D.
   $4R$

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