Physics-Objective Related Question Answers
1176. The first product formed in Uranium 238 disintegration series is?
Thorium - 234
1177. Isotones differ only in the number of?
Neutrons
1178. Beta rays are a stream of?
Electrons
1179. A particle similar to electron carrying positive charge is called?
Positron
1180. What is Nuclear fission?
The process of splitting the nuclei of heavy atoms into two approximately equal masses
1181. What is Nuclear reactor?
Nuclear reactor is a device used to produce nuclear energy by controlled nuclear fission
1182. What is Moderator?
It is the substance used to slow down the fast neutrons in a nuclear reactor
1183. Write examples of Moderators:?
Graphite and heavy water
1184. What are control rods?
It is made of substance which can absorb neutrons and control the rate of chain reaction
1185. The most suitable particle for splitting the nucleus of an atom is?
Neutron
1186. The substances used to absorb neutrons are?
Cadmium or boron rods
1187. The minimum mass of a radio active substance required to sustain chain reaction is called its?
Critical mass
1188. The process of repeated fission of the remaining fissionable atoms by the neutrons produced by earlier fission is called?
Chain reaction
1189. Photoelectric effect, Theory of Relativity etc. were discovered by?
Albert Einstein
1190. Pressure cooker was invented by?
Denis Papin
1191. Electric bulb was invented by Thomas Alva Edison who is known as?
“Wizard of Menlo Park”
1192. Tachyons are the particles which travel faster than light. They are invented by a Keralite?
E.C.G. Sudarshan
1193. John Barden, Walter H. Barttain and William Shockley are the scientists who invented?
Transistor
1194. Laser was invented by?
Theodore H. Maiman
1195. “Radar” was invented by?
Albert H. Taylor and Leo C. Young Dynamite and Gun Powder were invented by the founder of Nobel Prize?
1196. Who invented “Clinical Thermometer”?
Thomas Cliford Albert
1197. Father of Atom bomb is?
Robert Oppenheimer
1198. Who discovered nuclear fission?
Otto Hahn
1199. “Father of Hydrogen Bomb”?
Edward Teller
1200. Who first made an electromagnet?
William Sturger
© 2002-2017 Omega Education PVT LTD...Privacy | Terms And Conditions
Question ANSWER With Solution