Home
Class 12
PHYSICS
Starting with a sample of pure .^(66)Cu,...

Starting with a sample of pure `.^(66)Cu, 7//8` of it decays into `Zn` in `15` minute. The corresponding half-life is:

A

10 minutes

B

15 minutes

C

5 minutes

D

7.5 minutes

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • NTA NEET TEST 101

    NTA MOCK TESTS|Exercise PHYSICS|45 Videos

  • NTA NEET TEST 103

    NTA MOCK TESTS|Exercise PHYSICS|45 Videos

Similar Questions

Explore conceptually related problems

Starting with a sample of pure .^66 Cu, 7//8 of it decays into Zn in 15 min . The corresponding half-life is.

Starting with a sample of pure ^66Cu , 3/4 of it decays into Zn in 15 minutes. The corresponding half-life is

For a radioactive sample, 15/16 th part decays in 20 minutes. The half-life of the sample is

A sample of a radioactive substance undergoes 80% decomposition in 345 minutes. Its half life is …………minutes

A free neutron beta-decays to a proton with a half-life of 14 minutes .(a)What is the decay constant ?(b)Find the energy liberated in the process.

NTA MOCK TESTS-NTA NEET TEST 102-PHYSICS
  1. The force required to move a body up a rough inclined plane is double ...

    Text Solution

    |

  2. A man weighing 80 kg is standing on a trolley weighting 320 kg. The tr...

    Text Solution

    |

  3. Starting with a sample of pure .^(66)Cu, 7//8 of it decays into Zn in ...

    Text Solution

    |

  4. Activity of a radioactive sample decreases to (1/3)rd of its original ...

    Text Solution

    |

  5. A simple spring has length l and force constant K. It is cut into two ...

    Text Solution

    |

  6. A mass is suspended from a vertica spring which is executing SHM of fr...

    Text Solution

    |

  7. Ultraviolet light of wavelength 300nn and intensity 1.0Wm^-2 falls on ...

    Text Solution

    |

  8. when a monochromatic point source of light is at a distance 0.2 m from...

    Text Solution

    |

  9. The cylindrical tube of a spray pump has a cross-section of 8 cm^2, on...

    Text Solution

    |

  10. A big water drop is formed by the combination of 'n' small water dr...

    Text Solution

    |

  11. A fish looking up through the water sees the outside world contained i...

    Text Solution

    |

  12. Two identical thin planoconvex glass lenses (refractive index 1.5) eac...

    Text Solution

    |

  13. A smooth uniform rod of length L and mass M has two identical beads of...

    Text Solution

    |

  14. A disc of mass M and radius R has a spring of constant k attached to i...

    Text Solution

    |

  15. p-type semiconductor is

    Text Solution

    |

  16. For the expression P = X + XY , how many gates are required for its im...

    Text Solution

    |

  17. One mole of ideal gas goes through processP = (2V^2)/(1+V^2). Then ch...

    Text Solution

    |

  18. If the error in measuring the radius of the sphere is 2% and that in m...

    Text Solution

    |

  19. In the experiment of diffraction at a single slit, if the slit width i...

    Text Solution

    |

  20. Two polaroids are kept crossed to each other . If one of them is rotat...

    Text Solution

    |