An α-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 di

Question

An α-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 the proton will be

Prashant Kotian · Accepted Answer

Correct answer: A. At closest approach, q*V = k*q*Q/r. The charge q cancels, giving r_closest = kQ/V, independent of the projectile's charge and mass. Distance remains r.

💡 Solution & Explanation

Practice 22,000+ questions like this