Navigate

The wavelength of first line of Balmer series is 6563Å. The wavelength of first line

The wavelength of first line of Balmer series is 6563Å. The wavelength of first line of Lyman series will be

Options

(a) 1215.4Å
(b) 2500Å
(c) 7500Å
(d) 600Å

Correct Answer:

1215.4Å

Explanation:

λ(ʟyman) / λ(вalmer) = [(1/2²) – (1/3²)] / [(1/1²) – (1/2)²] = 5 / 27

λ(ʟyman) = (5 / 27) × λ(вalmer) = (5 / 27) × 6563 = 1215.4 Å

ML2012
admin:

Related Questions

  1. A capacitor of 2.5 μF is charged through a resistor of 4 MΩ. In how much time
  2. The net electric force on a charge of +3μC at the mid-point on the line joining two
  3. In Moseley’s law √ν=a(z-b), the values of the screening constant for K-series
  4. A cricketer catches a ball of mass 150 g in 0.1 sec moving with speed 20 m/s
  5. A satellite of mass m revolves around the earth of radius R at a height x from