The velocity of an electron in a certain Bohr's orbit of H-atom bears the ratio 1:412 to the velocity of light. Calculate the value of orbit number n .
The correct option is A 3
Given: Velocity of electron=1412×Velocity of light ..(i)
vn=2.189×108×Zn cm/sec ...(ii)
Equating eq. (i) and (ii), we get
where, velocity of light c = 3×1010cm/s