An αα-particle accelerated through V volt is fired towards a nucleus. Its distance of closest approach is r. If a proton accelerated through the same potential is fired towards the same nucleus, the distance of closest approach of proton will be :

An αα-particle accelerated through V volt is fired towards a nucleu

1.	An αα-particle accelerated through V volt is fired towards a nucleus. Its distance of closest approach is r. If a proton accelerated through the same potential is fired towards the same nucleus, the distance of closest approach of proton will be :
A.	r
B.	2r
C.	r/2
D.	r/4
Answer» B. 2r