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Physics - Nuclear Physics

Practise 20 KVPY previous year questions on Nuclear Physics, compiled from papers spanning 2010 to 2019. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty KVPY tests.

  1. 1The nuclear radius is given by R = r 0 A 1 / 3 , where r 0 is constant and A is the atomic mass number. Then, the nuclear mass density of U 2019 (SA)
  2. 2Originally the radioactive beta decay was thought as a decay of a nucleus with the emission of electrons only (Case I) . However, in additio2019 (SB/SX)
  3. 3The graph shows the log of activity log R of a radioactive material as a function of time t in minutes. The half-life (in minute) for the de2018 (SB/SX)
  4. 4Consider the following nuclear reactions : I. II. Then19 Nov, 2017 (SB/SX)
  5. 5Consider the following statements ( and stand for two different elements) (I) and are isotopes. (II) and are isotopes. (III) and have the sa05 Nov, 2017 (SA)
  6. 6The beta particles of a radioactive metal originate from.2015 (SA)
  7. 7Carbon-11 decays to boron-11 according to the following formula. Assume that positrons produced in the decay combine with free electrons in 2015 (SB/SX)
  8. 8Consider the following statements (i) All isotopes of an element have the same number of neutrons (ii) Only one isotope of an element can be2014 (SA)
  9. 9The wavelength of the first Balmer line caused by a transition from the level to the level in hydrogen is . the wavelength of the line cause2014 (SB/SX)
  10. 10The Half life of a particle of mass is and a stream of such particles is travelling with the K.E. of a particle being . The fraction of part2014 (SB/SX)
  11. 11The binding energy per nucleon of is and that of is . The Energy required to remove a neutron from is (mass of electron and proton are and )2014 (SB/SX)
  12. 12Two species of radioactive atoms are mixed in equal number. The disintegration of the first species is and of the second is . After a long t2013 (SB/SX)
  13. 13A nuclear decay is possible if the mass of the parent nucleus exceeds the total mass of the decay particles. If denotes the mass of a single2013 (SB/SX)
  14. 14atom disintegrates to Po with a half life of years by emitting six alpha particles and electrons. Here is -2012 (SA)
  15. 15In one model of the electron, the electron of mass is thought to be a uniformly charged shell of radius and total charge e, whose electrosta2012 (SB/SX)
  16. 16A parent nucleus is decaying into daughter nucleus which in turn decays to . The half lives of and are 40000 years and 20 years respectively2012 (SB/SX)
  17. 17A radioactive nucleus A has a single decay mode with half life . Another radioactive nucleus has two decay modes 1 and 2. If decay mode 2 we2012 (SB/SX)
  18. 18A nucleus of lead emits two electrons followed by an alpha particle. The resulting nucleus will have2011 (SA)
  19. 19At time , a container has radioactive atoms with a decay constant . In addition, numbers of atoms of the same type are being added to the co2010 (SB/SX)
  20. 20A nucleus has a half-life of 30 minutes. At its decay rate was measured as 120,000 counts/sec. What will be the decay rate at2010 (SB/SX)

Frequently Asked Questions

1.How many questions are available for Nuclear Physics?

This chapter includes 20 questions compiled from KVPY papers spanning 2010 to 2019.

2.Are these questions only from KVPY, or from other exams too?

These are KVPY questions specifically for the Nuclear Physics chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.

3.Is Nuclear Physics an important chapter for KVPY Physics?

Nuclear Physics has appeared in 9 of the 11 years of KVPY papers covered here, with 20 questions across 14 papers - about one per paper it appears in.