Question

An electron (e) is revolving in a circular orbit of radius 'r' in hydrogen atom. The angular momentum of the electron is (M = magnetic dipole moment associated with it and m = mass of electron) ____________.

विकल्प

• `(2"mM")/"e"`

• `(4"mM")/"e"`

• `(3"Mm")/"e"`

• `"mM"/"e"`

Answer 1

An electron (e) is revolving in a circular orbit of radius 'r' in hydrogen atom. The angular momentum of the electron is `(2"mM")/"e"`.

Explanation:

L = mvr

`"M" = "iA" = "ev"/(2pi"r") xx pi"r"^2 = "evr"/2`

`therefore "vr" = (2"M")/"e"`

`therefore "L" = (2"mM")/"e"`