Home
Class 12
PHYSICS
How are beta-rays emitted from a nucleus...

How are `beta`-rays emitted from a nucleus, when it does not contain electrons ?

Text Solution

Verified by Experts

The emission of electron from a radioactive nucleus is called `beta`-decay. During `beta`-decay, a neutron converts into a proton according to the following scheme.
`""_(0)n^(1) rarr ""_(1)H^(1)+""_(-1)e^(0)+bar(v)`
Hence the nucleus emits electrons, although it does not contain it.
Promotional Banner

Topper's Solved these Questions

  • ATOMS AND NUCLEI

    MBD -HARYANA BOARD|Exercise LONG ANSWER TYPE QUESTIONS|3 Videos

  • ATOMS AND NUCLEI

    MBD -HARYANA BOARD|Exercise OBJECTIVE TYPE QUESTIONS|23 Videos

  • ATOMS AND NUCLEI

    MBD -HARYANA BOARD|Exercise OBJECTIVE TYPE QUESTIONS|23 Videos

  • BOARD QUESTION PAPER (SOLVED) - 2019

    MBD -HARYANA BOARD|Exercise LONG ANSWER TYPE QUESTIONS|4 Videos

Similar Questions

Explore conceptually related problems

In gamma ray emission from a nucleus

In gamma ray emission from a nucleus

When a beta -particle is emitted from a nucleus, the neutron-proton ratio

When a beta^(-) particle is emitted from a nucleus, the neutrons-proton ratio:

How does a nucleoid differ from a nucleus ?

beta rays are emitted from the _________.

MBD -HARYANA BOARD-ATOMS AND NUCLEI-SHORT ANSWER TYPE QUESTIONS
  1. Describe the laws of radioactive decay. Derive equation of radioactive...

    Text Solution

    |

  2. State and explain the laws of radioactive disintegration. On its basis...

    Text Solution

    |

  3. What are alpha particles ? In the reaction ""(z)X^(A) rarr Y + alpha-p...

    Text Solution

    |

  4. Define nuclear fission. Write the fission reaction of a neutron with u...

    Text Solution

    |

  5. What is the nuclear fission reaction ? Give one example.

    Text Solution

    |

  6. Draw a labelled diagram of a nuclear reactor and explain the functions...

    Text Solution

    |

  7. Explain the function of moderator, control rods and coolant in a nucl...

    Text Solution

    |

  8. Draw a simplified diagram showing working of Nuclear Power Plant.

    Text Solution

    |

  9. Write a detailed note on nuclear reactor with diagram.

    Text Solution

    |

  10. Explain the role of control rods in a reactor. Why are they made of ca...

    Text Solution

    |

  11. Distinguish between nuclear fission and nuclear fusion.

    Text Solution

    |

  12. Calculate binding energy per n ucleon of ""(83)Bi^(209). Given mass of...

    Text Solution

    |

  13. Explain the Rutherford experiment on the scattering of alpha particles...

    Text Solution

    |

  14. Uranium ""(92)U^(238) is not suitable for chain reaction . Why ?

    Text Solution

    |

  15. How are beta-rays emitted from a nucleus, when it does not contain ele...

    Text Solution

    |

  16. Discuss three basic postulates of Bohr's model of atom.

    Text Solution

    |

  17. What are important features of J.J. Thomson's atom model ? Why was it ...

    Text Solution

    |

  18. What is nuclear fission ? Give an example to illustrate it. What is th...

    Text Solution

    |

  19. Explain Nuclear fission reaction with an example.

    Text Solution

    |

  20. What is the basic nuclear process underlying beta^(-) decay ? Write nu...

    Text Solution

    |