The following statements are given about hydrozen atom
(A) The wavelength of the spectral lines of lyman series are greater than the wavelength of the second spectral line of Balmer series.
(B) The orbits correspond to circular standing waves in which circumference of the orbit equas a whole numbers of wavelengths.

Options

A. A is flse ,B is true
B. A is true ,B is false
C. A is false,B is false
D. A is true,B is true

Answer

A

Explanation

(A)Inn Lyman series wavelength are longer than 91nm and shorter than 122nm
(In Balmer series wavelength are longer than 400 nm and shorte than 700nm.,br>`therefore lambda_("Lyman")lt lambda_("Balmer")`
(B)`2pir_n=nlambda` for the orbits corresponding to circular standing waves.