Which one did Rutherford consider to be supported by the results of experiments in which $\alpha - $ particles were scattered by gold foil?
Which one did Rutherford consider to be supported by the results of experiments in which $\alpha - $ particles were scattered by gold foil?
- A
The nucleus of an atom is held together by forces which are much stronger than electrical or gravitational forces
- B
The force of repulsion between an atomic nucleus and an $\alpha - $ particle varies with distance according to inverse square law.
- C
$\alpha - $ particles are nuclei of Helium atoms.
- D
Atoms can exist with a series of discrete energy levels
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(take the proton mass, $m _0=(5 / 3) \times 10^{-27} kg , h / e =4.2 \times 10^{-15} J / s / C ; \frac{1}{4 \pi \varepsilon_0}=9 \times 10^9 m / F ; 1 fm =10^{-15} m$ )
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(take the proton mass, $m _0=(5 / 3) \times 10^{-27} kg , h / e =4.2 \times 10^{-15} J / s / C ; \frac{1}{4 \pi \varepsilon_0}=9 \times 10^9 m / F ; 1 fm =10^{-15} m$ )
- [IIT 2012]
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