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Modern Physics QUESTIONS

Exam NameModern Physics QUESTIONS
DescriptionModern Physics QUESTIONS and Answers exams contains the questions from various competitive exams.These questions are the part of previous year paper.These kind of questions would be helpful in preparing for exams like IAS, PCS, UPSC, NDA, CDS SSC, RRB, PSC, IBPS
Exam TypeMASTER EXAM
Authenticity10002
creatorAnirudh(39043)
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Question: Particles which can be added to the nucleus of an atom without changing its chemical properties are;-

Answer:neutrons


Question: The fuel used in nuclear power plants is;-

Answer:U-235


Question: Heavy water is used as a moderator a nuclear reactor. The function of the moderator is:-

Answer:to slow down the neutrons to thermal energy


Question: Curie is a unit of-

Answer:radioactivity


Question: The strongest force in the nature is-

Answer:nuclear force


Question: Atomic power plant works on the principle of-

Answer:fission


Question: An atomic pile is used for-

Answer:conducting nuclear fission


Question: The mass energy relation is the out come of-

Answer:special theory of relativity


Question: The fourth state of matter is known as-

Answer:plasma


Question: Energy is continuously generated in the sun due to-

Answer:Nuclear fusion


Question: The phenomenon of ejection of electrons from the surface of metals when light of suitable wavelength falls on it is known as-

Answer:Photo electric effect


Question: A nuclear reactor harnesses nuclear energy by-

Answer:controlled chain raction


Question: If a U-238 nucleus splits into two identical parts the two nuclei so produced will be-

Answer:Stable


Question: The first explosion of an atomic device in India was carried out in the state of

Answer:Rajasthan


Question: Direct conversion of solar energy with the use of photovoltaic cell results in the production of-

Answer:electrical energy


Question: The technique of collecting information about an object from a distance without making physical contact with it is -

Answer:remote sensing


Question: What does the term Dolby B or Dolby C printed on tape recorders and other sound systems refer to ?

Answer:noise reduction circuit


Question: Under the Nuclear Power Projects, Environmental effects that have to be studied and resolved are-

Answer:All of the above


Question: Name the world famous space scientist who despite being paralysed for nearly three decades took a zero-gravity flight in 2007

Answer:Stephen Hawking


Question: India"s first dedicated navigation satellite IRNSS - 1A was launched from :

Answer:Sriharikota