Atoms & Nuclei

JEE Main level, single correct, medium

188 of 239

Question 188 of 239

Given below are two statements. One is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : The binding energy per nucleon is found to be practically independent of the atomic number A, for nuclei with mass numbers between 30 and 170.
Reason (R): Nuclear force is long range.
In the light of the above statements, choose the correct answer from the options given below :

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Answer: (A) (A)(A) is true but (R) is false

From graph between B.E/N & A we can see BE/N is almost constant ⇒\Rightarrow correct
Reason ⇒\Rightarrow incorrect as nuclear forces are short range forces.

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