Question

The ratio of the velocity of light and the velocity of electron in the first orbit of a hydrogen atom.
`[Given h = 6.624 xx 10^-27 erg-sec , m = 9.108 xx 10^-28 g, r = 0.529 xx 10^-8 cm]`.

Answer 1

`v=(h)/(2pimr)`
`=(6.624xx10^(-27))/(2xx3.14xx9.108xx10^(-28)xx0.529xx10^(-8))` ltbr `=2.189xx10^(8)cm//sec`
`(c)/(v)=(3xx10^(10))/(2.189xx10^(8))=137`.