Home
Class 12
PHYSICS
In a radioactive decay, a nucleus is tra...

In a radioactive decay, a nucleus is transformed into another with the emission of a positron. In this process the neutron-proton ratio

A

decreases

B

remains same

C

increases

D

becomes one

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • NUCLEAR PHYSICS AND RADIO ACTIVITY

    CP SINGH|Exercise EXERCISES|118 Videos

  • NEET PREVIOUS YEAR

    CP SINGH|Exercise PAPER|89 Videos

  • OPTICAL INSTRUMENTS

    CP SINGH|Exercise EXERCISES|63 Videos

Similar Questions

Explore conceptually related problems

A nucleus with an excess of neutrons may decay with the emission of

A radioactive decay can form an isotope of the original nucleus with the emission of particles

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:

Assertion: In the process of nuclear fission, the fragments emit two or three neutrons as soon as they are formed and subsequently emit particles. Reason : As the fragments contain an excess of neutrons over protons, emission of neutrons and particles bring their neutron/proton ratio the to stable values

During alpha decay of a nucleus, how does the neutron to proton ratio change?

During beta decay of a nucleus, how does the neutrons to proton ration change?

CP SINGH-NUCLEAR PHYSICS AND RADIO ACTIVITY-EXERCISES
  1. The electron emitted in beta radiation originates from

    Text Solution

    |

  2. Consider a sample of a pure beta-active material

    Text Solution

    |

  3. In a radioactive decay, a nucleus is transformed into another with the...

    Text Solution

    |

  4. In which of the following decays the atomic number decreases? (i) al...

    Text Solution

    |

  5. A and B are isotopes. B and C are isobars. All three are radioactive. ...

    Text Solution

    |

  6. Which of the following assertions are correct? (i) A neutron can dec...

    Text Solution

    |

  7. When a nucleus with atomic number Z and mass number A undergoes a radi...

    Text Solution

    |

  8. The number of beta particles emitter by radioactive sustance is twice ...

    Text Solution

    |

  9. The decay constant lambda of the radioactive sample is probaility of d...

    Text Solution

    |

  10. Some radioactive nucleus may emit

    Text Solution

    |

  11. The correct order of ionising capcity of alpha, beta and gamma-rays is

    Text Solution

    |

  12. Which of the following is in the increasing order for penetrating powe...

    Text Solution

    |

  13. A radiaoactive nucleus (initial mass number A and atomic number Z emit...

    Text Solution

    |

  14. Consider a radioactive material of half-life 1.0 minute. If one of the...

    Text Solution

    |

  15. In a radioactive series, .(92)U^(238) charges to .(82)Pb^(206) through...

    Text Solution

    |

  16. The decay constant of a radiaoactive sample is lambda . The half life ...

    Text Solution

    |

  17. The decay constant lambda of the radioactive sample is probaility of d...

    Text Solution

    |

  18. An accident occurs in a laboratory in which a large amount of a radioa...

    Text Solution

    |

  19. The percentage of quantity of a radioactive material that remains afte...

    Text Solution

    |

  20. Three fourth of the active decays in a radioactive sample in 3//4 sec....

    Text Solution

    |