Home
Class 12
PHYSICS
Assertion : In a radioactive disintegrat...

Assertion : In a radioactive disintegration, an electron is emitted by the nucleus.
Reason : Electrons are always present inside the nucleus.

A

If both, Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

B

If both, Assertion and Reason are true but Reason is not a correct explanation of the Assertion.

C

If Assertion is true but the Reason is false.

D

If both Assertion and Reason are false.

Text Solution

Verified by Experts

The correct Answer is:
C
`beta` particle are emitted form radioactive nuclei as a neutron is converted into a proton. So assertion is true, but the reason is false.
Promotional Banner

Topper's Solved these Questions

  • ATOMS AND NUCLEI

    PRADEEP|Exercise Fill in the blank 2|1 Videos

  • ATOMS AND NUCLEI

    PRADEEP|Exercise Multiple choice questions 1|1 Videos

  • ATOMS AND NUCLEI

    PRADEEP|Exercise curiocity quetions 3|1 Videos

  • COMMUNICATION SYSTEMS

    PRADEEP|Exercise MODEL TEST PAPER-2|9 Videos

Similar Questions

Explore conceptually related problems

A: In beta -decay an electron is emitted by the nucleus R: Electrons are not present inside the nucleus.

In a radioactive decay, an emitted electron comes from

The electrons cannot exist inside the nucleus because

Radioactive nuclei emit beta^-1 particles. Electrons exist inside the nucleus.

The number of electrons in the nucleus of C^(12) is

PRADEEP-ATOMS AND NUCLEI-Exercise
  1. Assertion : Rydberg's constant varies with mass no. of a given element...

    Text Solution

    |

  2. Assertion: In the process of nuclear fission, the fragments emit two o...

    Text Solution

    |

  3. Radioactivity of 108 undecayed radioactive nuclei of half life of 50 d...

    Text Solution

    |

  4. Assertion : In a radioactive disintegration, an electron is emitted by...

    Text Solution

    |

  5. Assertion : Fragments produced in the fission of U^(235) are active. ...

    Text Solution

    |

  6. Electron capture occurs more often than positron emission in heavy ele...

    Text Solution

    |

  7. Assertion : An electron and positron can annihilate each other creatin...

    Text Solution

    |

  8. Assertion: Forces acting between proton-proton (f(pp)), proton -neutro...

    Text Solution

    |

  9. Statement -1 : Large angle scattering of alpha particles led to the di...

    Text Solution

    |

  10. Statement-1: Impact parameter for scattering of alpha particles by 180...

    Text Solution

    |

  11. Statement-1: Distance of closest approach of alpha particle to the n...

    Text Solution

    |

  12. Statement-1: Nuclei of different atom have same size Statement-2: R=...

    Text Solution

    |

  13. Statement-1: Density of nuclear matter is same for all nuclei Statem...

    Text Solution

    |

  14. Statement-1: 1am u.=933MeV Statement-2: It follows form E=mc^(2)

    Text Solution

    |

  15. Statement -1: One kg of coal, on burning, produces energy =10^(7)"joul...

    Text Solution

    |

  16. Statement-1: After ten half life lives, the amount of a radioactive el...

    Text Solution

    |

  17. Statement-1: No law is violated in the nuclear reaction .(0)n^(1)to.(1...

    Text Solution

    |

  18. Statement-1: Half life of tritium is 12.5 yr. The fraction of tritium ...

    Text Solution

    |

  19. This question contains Statement - 1 and Statement -2 Of the four choi...

    Text Solution

    |

  20. Statement-1:A nucleus having energy E(1) decays by beta^(-) emission t...

    Text Solution

    |