Radiation Physics Flashcards
What is nuclear fission?
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.
Nuclear fission is either a ……… Or ……….. Process
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.
Most fissions are binary fissions
True or False.
Most fissions are binary fissions but occasionally (2-4 times per thousand events) three positively charged fragments are produced.
The smallest of fragments in tenary fission ranges from … To
…
A proton to an argon nucleus
True or false fission is usually encounter end into he modern world as a deliberately produced man made nuclear reaction induced by a neutron.
True
…….discovered infrared radiation
Wilhelm Herschel in the year 1800
Ultraviolet Light was disvoverdec by ………
Johann Wilhelm Ritter in 1801
Radio waves was discovered by
Heinrich Hertz while X rays in 1887
Xrays were discovered by
Willliem Rontgen in 1885
Alpha an Beta Waves were differentiated by …………… In ……..
Ernest Rutherford in 1899
True or false Alpha is positivitely charged while beta is negatively charged
True
……….proved that beta rays are fast electrons.
Henri Bequerel.
…….. Apha particles are ionized helium. This was discoveres b
Rutherford & acoleaque
Between Alpha and Beta Rays which had shorter penetrating power with positive charge?
Alpha Rays
……….proved that beta rays are fast electrons while ………… Proved that aloha particles are ionised helium
Henri Becquerel & Rutherford.
In 1901 a French Scientist, Paul Villard discovered a third neutrally charged & penetrating radiation; Rutherford named it …,….
Gamma Ray
What are the types of radiation?
Ionization(Directly/ &Non ionisation energy) e
True or false; electromagnetic rays such as X and Gamma Rays are indirectly ionising
True they do not produce chemical & biological damage themselves. But produce secondary electrons
An electromagnetic radiation that doesn’t produce enough energy per quantum to ionize atoms or molecules
Non ionizing radiation
What is nuclear force?
The force between two or more nucleons. Responsible for binding protons and neutrons;
Why is the mass of nuclei less than total(sum) mass of proton and neutrons which form them.
Because in the process of binding, they release energy.(principle used for nuclear weapons)
True or false Nuclear force is powerfully attractive between nucleons at distances of 1 femtometre but decreases beyond 2.5 fm
True
At a shorter distance than 0.7fm Nuclear force becomes repulsive true or false?
True, This is what is responsible for their physical size
