Identify the option which is correct w .r.t, structure of an atom.

An $\alpha \text{-particle }$ projected closer to the center of the atom will experience a lesser deviation as compared to the particle projected away from the center.

In the Millikan's oil drop experiment of determing charge on the cathode ray particle, $4.8\times {10}^{-19}C$ cannot be obtained as the charge on the oil drop.

Specific charge of a particle projected towards the nucleus of atomic number 29 having the closest distance of approach is $2.9Å$ is $\frac{{10}^8}{18 }C kg$ If it is projected at an initial speed of $4\times {10}^4.$

As per Rutherford model if number of particles deviated by an angle of ${60}^{\circ }$ is $x$ then those deviated by ${90}^{\circ }$ will be $\surd 2 \mathrm{x}$