# 10th Class Physics Chapter 18 MCQs with Answers

Are you looking for 10th Class Physics Chapter 18 MCQs with Answers according to the syllabus of all Boards in Pakistan? Then, you are at the right website. We provide 10th Class Physics Chapter 18 online tests according to board patterns in both English. Students want to know the important Questions and physics for the 10th class, to prepare it according to their syllabus. We are providing the Solution to Student Problems. Try and Practice this MCQs Series again and again to get the grip on this MCQs Chapter-18 of Physics Atomic and Nuclear Physics 10th Class.

Contents

## 10th Class Physics Chapter 18 MCQs with Answers

We have compiled the online MCQs for physics to facilitate the students of Matric. These online MCQs are presented in easy way so that you don’t face any problems in understanding them, as well as important questions, are also given. 10th Class Physics Chapters include Chapter 10 – Simple Harmonic Motion and Waves, Chapter 11 – Sound, Chapter 12 – Geometrical Optics, Chapter 13 – Electrostatics, Chapter 14 – Current Electricity, Chapter 15 – Electromagnetism, Chapter 16 – Basic Electronics, Chapter 17 – Information and Communication Technology and Chapter 18 – Atomic and Nuclear Physics.

### What is Atomic and Nuclear Physics?

Nuclear physics is the field of physics that studies the constituents of matter (protons and neutrons) and the interactions between them. Modern nuclear physics contains especially particle physics, which is taught in close association with nuclear physics. About 10,000 times smaller than the atom, the constituent particles of the nucleus, protons, and neutrons, attract one another so strongly by the nuclear forces that nuclear energies are approximately 1,000,000 times larger than typical atomic energies

10th Class Physics Chapter 18 MCQs: Atomic and Nuclear Physics

(1) The temperature of the center of sun is;

(a) 20 million kelvin
(b) 2 million kelvin
(c) 24 million kelvin
(d) 29 million kelvin

(2) Mass energy equation and theory of relativity were given by:

(a) Newton
(b) Quantum
(c) Einstein
(d) Volta

(3) Nuclear fission was first observed in 1939 by:

(a) Otto Hahn and Fritz Strasslnan
(b) Otto Hahn and Curie
(c) Fritz and Curie
(d) Otto Hahn and Rutherford

(4) In each fission reaction energy is released;

(a) 210meV
(b) 299mV
(c) 200 MeV
(d) 255meV

(5) During fission of I kg of Uranium -235 energy released is;

(a) 67 x 1010j
(b) 65 x 108j
(c) 60 x 108j
(d) 66 x 109j

(6) Hazards of radiation for humans arc;

(a) Leukemia
(b) Sterility
(c) Blindness
(d) all given

(7) Half-life of 6027Co is

(a) 20 year
(b) 40 years
(c) 50 years
(d) 30 years

(8) Radioactive isotope is used in cancerous tumours and cells

(a) P -32
(b) I – 131
(c) C – 14
(d) Co – 60

(9) When a tree dies

(a) C -14
(b) P – 32
(c) I – 131
(d) Co – 60

(10) The half-life of C-14 is;

(a) 5720 years
(b) 5730 years
(c) 5700 years
(d) 5202 years

(11) The stable argon nuclei Ar – 40 half life?

(a) 2.4 x 108 year
(b) 2.9 x 104 year
(c) 2.5 x 109 year
(d) 2.4 x 1011 year

(12) In which simplest atom, the nucleus has only one proton?

(a) Helium
(b) Carbon
(c) Nitrogen
(d) Hydrogen

(13) In order to find the intensity of radiations, which device (s) is/are used:

(b) Dosimeter
(d) Both a & b

(14) In nuclide 116X the number of protons are;

(a) 3
(b) 10
(c) 8
(d) 6

(15) Isotopes of an element have the same:

(a) chemical properties
(b) Atomic number
(c) Atomic mass
(d) colors

( 16) protium & deuterium contain

(a) two protons
(b) three protons
(c) one proton
(d) no proton

(17) who accidentally discovered that uranium salt crystals emit an invisible radiation that can darken a photographic plate;

(a) Becquerel
(b) Marie Curie
(c) Pierre
(d) Rutherford

(18) Transmutation is

(a) unstable nuclei change into stable nuclei
(b) spontaneous process
(c) a&b both
(d) nonspontaneous process

(19) Gamma rays are also called:

(a) photons
( b) electrons
(c) protons
(d) positrons

(20) Which have the greatest power of ionization as compared to others?

(a) ß-particles
(b) ~-particles
(c) 7-particles
(d) x-rays

(21) Penetrating power of 7 rays as compared to a rays and 13 rays is:

(a) Greater
(b) Sinaller
(c) Equal
(d) Anyone can be

(22) The phenomenon by which radiations split water into positive an(l negative ions is called;

(a) ionization
(b) penetration
(c) sublimation
(d) deflection

(23) The rate Of radioactive decay is proportional to the number of:

(a) stable nuclei present
(b) unstable nuclei present
(c) electrons present
(d) protons present

(24) Radium-226 has a half-life of:

(a) 1820 years
(b) 1920 years
(c) 1620 years
(d) 1600 years

(25) Stable nuclei have atomic number between:

(a) I – 82
(b) 2 – 89
(c) 2 – 88
(d) 2-85

(26) Elements are naturally unstable having atomic number greater than;

(a) 84
(b) 89
(c) 82
(d) 88

(27) When two light nuclei combine to form a heavier nucleus, this process is called;

(a) Nuclear fission
(b) Nuclear fusion
(c) bombardment
(d) disintegration

(28) Which are chemical compounds containing some quantity of radioisotope?

(b) Hard compounds
(c) High energy compounds
(d) Soft compounds

(29) Which compound readily accumulates in the thyroid gland and can be used for monitoring of thyroid functioning?

(a) I – 131
(b) I – 130
(c) I – 132
(d) I – 129

(30). Which compound is used to diagnose brain tumour

(a) Phosphorus – 32
(b) iodine – 131
(c) hydrogen – 3
(d) Neon – 152