| Assertion (A): In the a-particle scattering experiment, most of the a-particles pass undeviated. |
| Reason (R): Most of the space in the atom is empty. |
A) Both A and R are true and R is the correct explanation of A
B) Both A and R are true but R is NOT the correct explanation of A
C) A is true but R is false
D) A is false and R is true
Correct Answer: A
Solution :
Option (A) is correct. Explanation: Most of the a-particles pass roughly in a straight line (within \[{{1}^{0}}\]) without deviation. This shows that no force is acting on them. So assertion is true. Most of the space in the atom is empty. Only 0.14% of a-particles are scattered more than \[{{1}^{\operatorname{o}}}\].
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