Balmer gave an equation for wavelength of visible region of H-spectrum as barv =(n^2 - 4)/(Kn^2)where n = principal quantum number of energy level, K = constant terms.of R (Rydberg constant). The value of K in terms of R is:

Balmer gave an equation for wavelength of visible region of H-spectrum

1.	Balmer gave an equation for wavelength of visible region of H-spectrum as barv =(n^2 - 4)/(Kn^2)where n = principal quantum number of energy level, K = constant terms.of R (Rydberg constant). The value of K in terms of R is:
Answer» R `R/2` `4/R` `5/R` Solution :`bar(upsilon) =R[(1)/(2^2) - 1/(n^2)] = 1/(LAMBDA)` After SIMPLIFICATION of this equation and then comparing with `bar(V) = (n^2 - 4)/(Kn^2) ` we get K = 4/R