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Class 12 Physics Chapter 13 - Nuclei MCQ and Assertion Questions

Short Quiz · Class 12 · Physics · CBSE

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Chapter 13 - Nuclei | 5 questions | about 4 minutes

Practise Chapter 13 - Nuclei with Teachoo's Short Quiz (Class 12 · Physics · CBSE). Practise these questions in a free interactive quiz with answer feedback.

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Question 1 of 5
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Question 1 of 5
CBSE Past Year 2026

Assertion (A) : Nuclear forces are always attractive.

Reason (R) : The nuclear force between protons and neutrons in a nucleus is a weak force.

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Question 2 of 5
CBSE Past Year 2026

Reason (A) : The mass of a nucleus is less than the sum of the masses of the constituent nucleons.

Reason (R) : Energy is absorbed when the nucleons are bound together to form a nucleus.

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Question 3 of 5
CBSE Past Year 2026

The radius of a nucleus of mass number 125 is

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Question 4 of 5
CBSE Past Year 2026

If \(r_1\) and \(r_2\) are the radii of atomic nuclei of mass numbers 64 and 27 respectively, then the value of \(\left(\frac{r_1}{r_2}\right)\) is:

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Question 5 of 5
CBSE Past Year 2026

Assertion (A) : Energy is released when heavy nuclei undergo fission or light nuclei undergo fusion.

Reason (R) : For heavy nuclei, binding energy per nucleon increases with increasing Z while for light nuclei, it decreases with increasing Z.

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Practice · Chapter 13 - Nuclei