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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
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Question: Particles which can be added to the nucleus of an atom without changing its chemical properties are;-


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


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-


Question: The strongest force in the nature is-

Answer:nuclear force

Question: Atomic power plant works on the principle of-


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-


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-


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


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 :