An `alpha`-particle having kinetic energy x MeV falls on a Cu-foil. The shortest
Channel: Doubtnut
Date: 2020-04-12

An `alpha`-particle having kinetic energy x MeV falls on a Cu-foil. The shortest distance from the nucleus of Cu to which `alpha`-particle reaches is `1.67 xx 10^(-14) m`.     What is the value of x ?    [Given : Atomic number of Cu = 29, K = `9 xx 10^(9) Nm^(2)//C^(2)`]