Radiation Physics

Question 1

What is nuclear fission?

Answer 1

Nuclear fission is a Nuclear reaction or radioactive decay process.in which nucleus of an atom splits into two smaller parts(neutron or Photons) and releasing a large amount of energy.

Question 2

Nuclear fission is either a ……… Or ……….. Process

Answer 2

Nuclear fission is a Nuclear reaction or radioactive decay process.in which nucleus of an atom splits into two smaller parts(neutron or Photons) and releasing a large amount of energy.

Question 3

Most fissions are binary fissions

True or False.

Answer 3

Most fissions are binary fissions but occasionally (2-4 times per thousand events) three positively charged fragments are produced.

Question 4

The smallest of fragments in tenary fission ranges from … To

…

Answer 4

A proton to an argon nucleus

Question 5

True or false fission is usually encounter end into he modern world as a deliberately produced man made nuclear reaction induced by a neutron.

Answer 5

True

Question 6

…….discovered infrared radiation

Answer 6

Wilhelm Herschel in the year 1800

Question 7

Ultraviolet Light was disvoverdec by ………

Answer 7

Johann Wilhelm Ritter in 1801

Question 8

Radio waves was discovered by

Answer 8

Heinrich Hertz while X rays in 1887

Question 9

Xrays were discovered by

Answer 9

Willliem Rontgen in 1885

Question 10

Alpha an Beta Waves were differentiated by …………… In ……..

Answer 10

Ernest Rutherford in 1899

Question 11

True or false Alpha is positivitely charged while beta is negatively charged

Answer 11

True

Question 12

……….proved that beta rays are fast electrons.

Answer 12

Henri Bequerel.

Question 13

…….. Apha particles are ionized helium. This was discoveres b

Answer 13

Rutherford & acoleaque

Question 14

Between Alpha and Beta Rays which had shorter penetrating power with positive charge?

Answer 14

Alpha Rays

Question 15

……….proved that beta rays are fast electrons while ………… Proved that aloha particles are ionised helium

Answer 15

Henri Becquerel & Rutherford.

Question 16

In 1901 a French Scientist, Paul Villard discovered a third neutrally charged & penetrating radiation; Rutherford named it …,….

Answer 16

Gamma Ray

Question 17

What are the types of radiation?

Answer 17

Ionization(Directly/ &Non ionisation energy) e

Question 18

True or false; electromagnetic rays such as X and Gamma Rays are indirectly ionising

Answer 18

True they do not produce chemical & biological damage themselves. But produce secondary electrons

Question 19

An electromagnetic radiation that doesn’t produce enough energy per quantum to ionize atoms or molecules

Answer 19

Non ionizing radiation

Question 20

What is nuclear force?

Answer 20

The force between two or more nucleons. Responsible for binding protons and neutrons;

Question 21

Why is the mass of nuclei less than total(sum) mass of proton and neutrons which form them.

Answer 21

Because in the process of binding, they release energy.(principle used for nuclear weapons)

Question 22

True or false Nuclear force is powerfully attractive between nucleons at distances of 1 femtometre but decreases beyond 2.5 fm

Answer 22

True

Question 23

At a shorter distance than 0.7fm Nuclear force becomes repulsive true or false?

Answer 23

True, This is what is responsible for their physical size