Question

Assertion :In Rutherford's gold foil experiment, very few $\alpha$-particles are deflected back. Reason: Nucleus present inside the atom is heavy.

• A. Both assertion and reason are correct and reason is the correct explanation for assertion
• B. Both assertion and reason are correct but reason is not the correct explanation for assertion
• C. Assertion is correct but reason is incorrect
• D. Both assertion and reason are incorrect

Answer 1

The correct option is B Both assertion and reason are correct but reason is not the correct explanation for assertion

In Rutherford's gold foil experiment, very few α -particles are deflected back. This is because the atom consists of large empty space.
Nucleus present inside to the atom is heavy. Almost entire mass of an atom and positive charge is concentrated in the nucleus.