class 12 physics chapter 21 Important Questions

Learn  Class 12 Physics Chapter 21 Nuclear Physics Important Questions. These important physics Class 12 mcqs, short and long questions are collected by going through different past papers of all Punjab Board Pakistan.

Why are these questions important?

These Questions are taken from past papers of Class 12 Physics. These questions are top repeated of in previous papers of Physics Class 12 of all Punjab boards as;

      Bahawalpur Board

      D.G.Khan Board

      Faisalabad Board

      Gujranwala Board

      Lahore Board

      Multan Board

      Rawalpindi Board

Content is created and designed with intense care and diligence. Here is only the most important MCQ, short questions and long questions of Class 12 Physics Chapter 21 Nuclear Physics .

PDF Download and Print Available

You can easily download in pdf format or view Physics Class 12 mcqs, short questions and long questions  online. You can easily print these files in simple way. Here you find Class 12 Physics Chapter 21 Nuclear Physics important mcqs, short and long questions. By Preparing these important questions, you will achieve splendid marks in Physics Class 12. This content is very helpful for weak students and also helpful for those students that are better at Class 12 Physics exam preparation. These Questions are based on the current Physics Class 12 syllabus according to Punjab Textbook Board.

Great Achievement in Short Time

Generally, students get less time for preparation. If we talk about Class 12 Physics, we need a lot of intensive time to prepare for it. 2nd Year students of face big difficulty while preparation of Physics 12 MCQs, Short & Long questions. Good News! mhbeducator.com offers you, the easiest and smartest way to prepare Physics Class 12 by which students can save their time and will able to prepare Class 12 Physics very fast. Here your are provided Class 12 Physics Chapter 21 Nuclear Physics MCQs, important short and long questions. For other chapters click the link below the Post. These Questions are based on the current Class 12 Physics syllabus according to Punjab Textbook Board.

About This Chapter

Class 12 Physics Chapter 21 Nuclear Physics enables the students to Atomic Nucleus, Isotopes, Mass defect and binding energy, radioactivity and Half life. Students learn Interaction of Radiation With Matter and Radiation Detectors. Students learn Nuclear Reactions as Nuclear Fission and Fusion Reaction. Students learn Radiation Exposure , Biological Effects of Radiation and Biological and Medical Uses of Radiation. At the last, you learn Basic Forces of Nature and Building Blocks of Matter. This Post "class 12 physics chapter 21 Important Questions" covers all important mcqs, short and long questions related to important  topics of this chapter.

👉Imp MCQs - Physics Class 12 CH # 21

1. How many numbers of Quark are:

(A) 6

(B) 5

(C) 8

(D) 2

(A) 6

2. A pair of quark and anti-quark makes:

(A) Proton

(B) Photo

(C) Meson

(D) Positron

(C) Meson

3. Which pair of particles belongs to hadrons:   

(A) Positrons and Electrons

(B) Neutrons and Electrons

(C) Protons and Neutrons

(D) Photons and neutrons

(D) Photons and neutrons

4. Gamma rays from cobalt-60 are used for the treatment of :
    

(A) Cancer

(B) Heart attack

(C) Goiter

(D) None of these

(A) Cancer

5. Tracer isotope that is used for treatment of thyroid gland:

(A) Iodine-131

(B) Carbon-14

(C) Cobalt-60

(D) None of these

(A) Iodine-131

6. Nuclear fission chain reaction is controlled by using:

(A) Steel rods

(B) Cadmium rods

(C) Graphite rods

(D) None of these

(B) Cadmium rods

7. The dead time of Geiger Muller tube is:

(A) 10^-4 sec

(B) 10^-3 sec

(C) 10^-2 sec

(D) 10^-1 sec

(A) 10^-4 sec

8. Half life of uranium-238 is? 

(A) 4.5 × 10⁶ years

(B) 4.5 × 10³ years

(C) 4.5 × 10⁵ years

(D) 4.5 × 10⁹ years

(A) 4.5 × 10⁶ years

9. When a nucleus emits alpha particle , its atomic mass decreases by: 

(A) 4

(B) 3

(C) 2

(D) 1

(A) 4

10.  In 1932 neutron was discovered by :

(A) Chadwick

(B) Bohr

(C) Rutherford

(D) J.J Thomson

(A) Chadwick

👉Next, there is  PDF containing Physics class 12 chapter 21 important Short and Long Questions covers all important topics of this chapter.

For Answers of these Questions

👉Visit us our YouTube Channel “MHB Academy”. Subscribe and press the bell icon for notifications of updates about Physics class 12 and other subjects of your concern. 

👉Follow and like our Facebook Page "MHB Educator" for news, FAQs and valuable educational updates.

👉Other Chapters (PDF) of Class 12 Physics Punjab Textbook Board

✅Chapter 12

Electrostatics

✅Chapter 13

Current Electricity

✅Chapter 14

Electromagnetism

✅Chapter 15

Electromagnetic Induction

✅Chapter 16

Alternating Current

✅Chapter 17

Physics of Solids

✅Chapter 18

Electronics

✅Chapter 19

Dawn of Modern Physics

✅Chapter 20

Atomic Spectra