A) If both assertion and reason are true and the reason is the correct explanation of the assertion.
B) If both assertion and reason are true but reason is not the correct explanation of the assertion.
C) If assertion is true but reason is false.
D) If the assertion and reason both are false.
E) If assertion is false but reason is true.
Correct Answer: A
Solution :
In a-particle scattering experiment, Rutherford found a small number of a-particles which were scattered back through an angle approaching to \[180{}^\circ \]. This is possible only if the positive charges are concentrated at the centre or nucleus of the atom.
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