NEET Physics Atoms Questions Solved

Watch Physics > Atoms Videos
play button
NEET - 2009

In a Rutherford scattering experiment when a projectile of charge Z1 and mass M1 approaches a target nucleus of charge Z2 and mass M2, the distance of closest approach is r0. The energy of the projectile is 

(a) directly proportional to M1×M2

(b) directly proportional to Z1Z2

(c) inversely proportional to Z1

(d) directly proportional to mass M1

A particle of mass M1 and charge z1 possess initial velocity u, when it is at a large distance from the nucleus of an atom having atomic number z2. At the distance of closest approach, the kinetic energy of particle is completely converted to potential energy. Mathematically, 

            12M1u2=14πε0z1z2r0

So the energy of the particle is directly proportional to z1z2.

Difficulty Level:

  • 9%
  • 72%
  • 12%
  • 9%
Crack NEET with Online Course - Free Trial (Offer Valid Till September 21, 2019)