Nuclei

Nuclei

Easy Questions

Modern Physics

Dual Nature of Radiation and Matter
Atoms
Nuclei
Semiconductor Electronics : Materials, Devices and Simple Circuits
  1. ​In the reaction, 1H2 + 1H3 → 2He4 + 0n1,  if the binding energies of 1H2, 1H3 and 2He4 are respectively, a, b and c (in MeV), then the energy (in MeV) released in this reaction is








  1. View Hint View Answer Discuss in Forum

    1H2 and 1H3 requires a and b amount of energies for their nucleons to be separated.
    2He4 releases c amount of energy in its formation i.e., in assembling the nucleons as nucleus. ​
    Hence, Energy released =c – (a + b) = c – a – b

    Correct Option: C

    1H2 and 1H3 requires a and b amount of energies for their nucleons to be separated.
    2He4 releases c amount of energy in its formation i.e., in assembling the nucleons as nucleus. ​
    Hence, Energy released =c – (a + b) = c – a – b

  1. In any fission process, the ratio
    mass of fission products
    		 is
    mass of parent nucleus








  1. View Hint View Answer Discuss in Forum

    Binding energy per nucleon for fission products is higher relative to Binding energy per nucleon for parent nucleus, i.e., more masses are lost and are obtained as kinetic energy of fission products. So, the given ratio < 1.

    Correct Option: C

    Binding energy per nucleon for fission products is higher relative to Binding energy per nucleon for parent nucleus, i.e., more masses are lost and are obtained as kinetic energy of fission products. So, the given ratio < 1.

  1. Fission of nuclei is possible because the binding energy per nucleon in them​








  1. View Hint View Answer Discuss in Forum

    B.E. per nucleon is smaller for lighter as well as heavier nucleus. But fusion reaction occurs for small mass number nuclei and fission reaction occurs for larger mass number nuclei to attain reaction binding energy per nucleon.

    Correct Option: D

    B.E. per nucleon is smaller for lighter as well as heavier nucleus. But fusion reaction occurs for small mass number nuclei and fission reaction occurs for larger mass number nuclei to attain reaction binding energy per nucleon.

  1. In a fission reaction
    92U236 → 117X + 117Y + n + n
    the binding energy per nucleon of X and Y is 8.5 MeV whereas of 236U is 7.6 MeV. The total energy liberated will be about








  1. View Hint View Answer Discuss in Forum

    Binding energy
    = 117 × 8.5 + 117 × 8.5 – 236 × 7.6
    = 234 × 8.5 – 236 × 7.6
    = 1989 – 1793.6 = 200 MeV
    Thus, in per fission of Uranium nearly 200 MeV energy is liberated

    Correct Option: B

    Binding energy
    = 117 × 8.5 + 117 × 8.5 – 236 × 7.6
    = 234 × 8.5 – 236 × 7.6
    = 1989 – 1793.6 = 200 MeV
    Thus, in per fission of Uranium nearly 200 MeV energy is liberated

  1. The explosion of the atomic bomb takes place due to​​








  1. View Hint View Answer Discuss in Forum

    nuclear fission

    Correct Option: A

    nuclear fission