In the Rutherford experiment,alpha-particles | vedclass

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(A) In the Rutherford $\alpha$-particle scattering experiment,the $\alpha$-particles are positively charged and the nucleus is also positively charged

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$B$

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(A) In the Rutherford $\alpha$-particle scattering experiment,the $\alpha$-particles are positively charged and the nucleus is also positively charged.Due to the electrostatic force of repulsion between the nucleus and the $\alpha$-particles,the particles will deviate away from the nucleus.Path $A$ shows deflection away from the nucleus,which is correct.Path $C$ shows deflection away from the nucleus,which is correct.Path $D$ shows deflection away from the nucleus,which is correct.Path $B$ shows the $\alpha$-particle moving towards the nucleus and then turning back,but the path shown is physically impossible because the electrostatic force acts along the line joining the charges. The particle would be repelled directly back along the same line of approach,not in a $U$-turn as depicted in path $B$.Therefore,path $B$ is not possible.

In the Rutherford experiment,$\alpha$-particles are scattered as shown in the figure. Which of the four paths is not possible?

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