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Chapter 26 of 29
Practice Quiz

Nuclear Physics

Telangana Board · Class 12 · Physics

Practice quiz for Nuclear Physics — Telangana Board Class 12 Physics. MCQs and questions with answers to test your preparation.

45 questions24 flashcards5 concepts

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Quick Quiz: Nuclear Physics

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1

What is the mass number of an atom with 17 protons and 18 neutrons?

2

Calculate the radius of ⁸₄Be nucleus. Given r₀ = 1.2 × 10⁻¹⁵ m.

3

What is the binding energy equivalent of 1 atomic mass unit (u)?

4

A radioactive sample has 1000 atoms initially. After one half-life, how many atoms remain?

45 Questions·
multiple choicemultiple correcttrue false

Sample Questions

1multiple correct

Which of the following are characteristics of α-particles? (Select all correct answers)

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They are helium nuclei, They have high ionizing power, They consist of 2 protons and 2 neutrons

α-particles are helium nuclei (⁴₂He) with 2 protons and 2 neutrons, making them positively charged. They have high ionizing power but low penetrating power, being stopped by thin aluminum sheets.

2true false

The half-life of a radioactive substance is directly proportional to its decay constant.

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False

Half-life is inversely proportional to decay constant: T₁/₂ = 0.693/λ. As decay constant increases, half-life decreases.

3multiple correct

In the nuclear reaction ¹⁴₇N + ⁴₂He → ¹⁷₈O + ¹₁H, what is conserved?

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Mass number, Atomic number, Charge, Energy

In nuclear reactions: Mass number (14+4=17+1=18), Atomic number (7+2=8+1=9), and Charge are conserved. Energy is also conserved. Number of neutrons may change.

4multiple choice

Nuclear fission of ²³⁵U typically releases how much energy per fission?

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200 MeV

Nuclear fission of ²³⁵U releases approximately 200 MeV per fission event. This enormous energy comes from the mass defect when uranium splits into lighter fragments.

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Frequently Asked Questions

What are the important topics in Nuclear Physics for Telangana Board Class 12 Physics?
Nuclear Physics covers several key topics that are frequently asked in Telangana Board Class 12 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Nuclear Physics — Telangana Board Class 12 Physics?
Understand the core concepts first, then work through the 45 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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