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2nd Year Physics Chapter 21 MCQs

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You can get the important 2nd Year Physics Chapter 21 MCQs with Answers Nuclear Physics here. The last chapter is about the properties of atomic nuclei that are covered in Nuclear Physics. So, first of all, the concept of the Atomic Nucleus is important. The next concept is the Mass defect and Binding energy that is followed by Radioactivity. The conversion of a nucleus into a new nucleus after radioactivity is called Nuclear Transmutation. Half-life is also an important concept. Then there are the Nuclear Fission and Nuclear Fusion reactions. These are explosive reactions. There are some biological effects of radiation. On the other hand, there are also several biological and medical uses of these radiations. So, this is a brief introduction to this chapter. Let’s check out the important MCQs of this chapter below and solve the quiz.

2nd Year Physics Chapter 21 MCQs with Answers Nuclear Physics

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Physics Chapter 21

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The capture of a neutron by a nucleus results in the formation of

2 / 20

If the mass of U-235 is less than the critical mass the

3 / 20

Range of γ -rays in air obeys

4 / 20

Ion pairs per mm produced in air by γ -rays are about

5 / 20

If the decay constant is doubled, then half-life is

6 / 20

An α-emission is always accompanied by

7 / 20

After β -emission from the nucleus, which particle is/are formed?

8 / 20

Beta rays emitted by a radioactive material are

9 / 20

If the decay constant of an element is smaller then

10 / 20

The pressure of a suitable mixture of the gas, used in the GM tube is

11 / 20

What is the ratio of un-decayed and decayed nuclei of a radioactive element after 3 half-lives have elapsed?

12 / 20

α - particles from natural radioactivity have an equivalent dose of 20 Sv for a person having a mass of 40 kg. The energy that is absorbed by that person due to α - particles

13 / 20

The particle whose emission does not affect the charge number and nucleon number of the nucleus

14 / 20

One milligram of matter converted into energy will give

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Two nucleons are at a separation of 1 × 10–15 m. The net force between them is F1 if both are neutrons, F2 if both are protons, and F3 if one is a proton and the other is the neutron. In such a case

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The number of protons, electrons, and neutrons in a nucleus of atomic number 11 and mass number 24 is

17 / 20

Choose the correct

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The percentage of the original quantity of radioactive material left after five half-lives is approximately

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After two hours, one-sixteenth of the starting amount of a certain radioactive isotope remains undecayed. The half-life of the isotope is

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A given radioactive sample is reduced from 20 g to 1.25 g in 40 days. Its half-life would be

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