The Doppler Effect...
<span>It describes an increase (or decrease) in the frequency of sound, light, or other waves as the source and observer move toward (or away from) each other.</span>
your mom n:
is fjie nu.skvjs.,zndzfxoiv xjl,mdfk
Answer:
(a) Electric force will be 
(B) Velocity 
Explanation:
We have given that radius of the circular orbit 
Charge on electron 
(A) According to coulomb's law electric force between two charges is given by

So electric force 
We know that centripetal force is given by 
So 
