If an electron travels with a velocity of 1/100th speed of light in the first in the first Bohr orbit, what is its velocity (relative to the speed of light) in the 5th Bohr orbit ?

If an electron travels with a velocity of 1/100th speed of light in th

1.	If an electron travels with a velocity of 1/100th speed of light in the first in the first Bohr orbit, what is its velocity (relative to the speed of light) in the 5th Bohr orbit ?
Answer» 0.002 0.1 0.5 0.7 Solution :`v_(N) = v_(0) (Z)/(n)` `v_(1) = (1)/(100) xx c = v_(0) (1)/(1) = v_(0), " i.e., " v_(0) = (c)/(100)` `v_(5) = v_(0) (1)/(5) = (c)/(100) xx (1)/(5) = (c)/(500) = 0.002 c`