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Assertion (A) : The positively charged n...

Assertion (A) : The positively charged nucleus of an atom has a radius of almost `10^(-15)` m.
Reason (R) : In a-particle scattering experiment the distance of closest approach for `alpha` -particles is of the order of `10^(-15)` m.

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 is false but reason is true.

Text Solution

Verified by Experts

The correct Answer is:
A
Distance of closest approach provides an upper limit for the size of nucleus.
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