The distance of closest approach of an $\alpha$- particle fired towards a nucleus with momentum $p$,is $r$. The distance of closest approach when the momentum of $\alpha$-particle is $2p$ is

Q. The distance of the closest approach of an $\alpha -$particle fired towards a nucleus with momentum $p$ is $r$. If the momentum of the $\alpha -$particle is $2p$, the corresponding distance of the closest approach is -

Q. The distance of closest approach of an $\alpha$-particle projected towards a nucleus with momentum p is r. What will be the distance of closest approach, when the momentum of projected $\alpha$-particle is 2p?

Q. The distance of closest approach of an alpha-particle fired towards a nucleus with momentum p is r. If the momentum of the alpha-particle is 2p, the corresponding distance of closest approach is :

Q. The distance of closest approach of an $\alpha$-particle fired at nucleus with momentum $P$ is $d$. The distance of closest approach when the $\alpha$-particle is fired at same nucleus with momentum $3P$ will be:

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