Assertion : In Rutherford's `alpha`-particle scattering experiment, most of the `alpha`-particles were deflected by nearly `180^(@)`.
Reason : The positive charge of the atom is spread throughout the atom that repelled and deflected the positively charged `alpha`-particles.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the correct explanation of assertion.
C. If assertion is true but reason is false.
D. If both assertion and reason are false.

Answer

D

Explanation

In Rutherford's experiment, most of the `alpha`-particles passed through the gold foil undeflected and a very few `alpha`-particles were deflected by nearly `180^(@)` because most of the space in the atom is empty and the positive charge is concentrated in a very small volume that repelled and deflected the positively charged `alpha`-particles.