If an orbital electron of the hydrogen atom jumps from the groud state to a higher energy state, its orbital value. If the radius of the electron orbit in the ground state is `r`, then the radius of the new orbit would be:

Options

A. `2r`
B. `4r`
C. `8r`
D. `16r`

Answer

B

Explanation

Since speed reduce to half, `KE` reduced to
` 1/4thRightarrow n=2mvr=(nh)/(2pi)`
` mv_(0)r=1. h/(2pi)……..I`
` m(V_(0))/2r'=2.h/(2pi).....II`