Home
Class 12
PHYSICS
In a sample of a radioactive substance, ...

In a sample of a radioactive substance, what fraction of the initial nuceli will remain undecayed after a time `t=T//2` , where T=half -life of radioactive substance?

A

`(1)/sqrt(2))`

B

`(1)/(2sqrt2))`

C

`(1)/(4)`

D

`(1)/(sqrt(2-1))`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • MODERN PHYSICS

    DC PANDEY|Exercise for JEE Advanced (only one option is Correct)|77 Videos

  • MODERN PHYSICS

    DC PANDEY|Exercise for JEE Advanced (More than One Options is Correct )|1 Videos

  • MAGNETISM AND MATTER

    DC PANDEY|Exercise Medical gallery|1 Videos

  • MODERN PHYSICS - 1

    DC PANDEY|Exercise Level 2 Subjective|23 Videos

Similar Questions

Explore conceptually related problems

In a sample of radioactive material , what fraction of the initial number of active nuclei will remain undisintegrated after half of the half life of the sample ?

Half life of a radioactive sample is 2x years. What fraction of this sample will remain undecayed after x years?

In a sample of radioactive material, what fraction of initial number of active nuclei will remain undistintegrated after half of a half0life of the sample?

The half life of radioactive substance is T. Then the fraction of the substance that has decayed in time t is-

In a radioactive sample, the fraction of initial number of redioactive nuclie, which remains undecayed after n mean lives is

Tritium has a half-life of 12.5 years. What fraction of the sample will remain undecayed after 50 years?

Half life of a radioactive element is 10 days. What percentage of the element will remain undecayed after 100 days?

A radioactive sample remains undecayed 9/16 after time t.How much sample remains undecayed after time t/2

The relationship between decay constant lamda and half-life T of a radioactive substance is

DC PANDEY-MODERN PHYSICS-Integer Type Questions
  1. In a sample of a radioactive substance, what fraction of the initial n...

    Text Solution

    |

  2. The ratio between acceleration of the electron in singley ionized heli...

    Text Solution

    |

  3. If the radius of firs Bohr's orbit is x, then de-Broglie wavelenght of...

    Text Solution

    |

  4. A H-atom moving with speed v makes a head on collisioon with a H-atom ...

    Text Solution

    |

  5. The magnetic fieold at the centre of a hydrogen atom due to the motion...

    Text Solution

    |

  6. when the voltage applied to an X-ray tube increases from V(1) = 10 kV ...

    Text Solution

    |

  7. Light of wavelength 330nm falling on a piece of metal ejects electrons...

    Text Solution

    |

  8. Light of wavelength 0.6mum from a sodium lamp falls on a photocell and...

    Text Solution

    |

  9. An alpha-particle accelerated through V volt is fired towards a nucleu...

    Text Solution

    |

  10. The kinetic energies of the photoelectrons ejected from a metal surfac...

    Text Solution

    |

  11. In a hydrogen atom following the Bohr's psotulates the product of line...

    Text Solution

    |

  12. A target element A is bombarded with electrons and the wavelengths of ...

    Text Solution

    |

  13. A moving hydrogen atom makes a head on collision with a stationary hy...

    Text Solution

    |

  14. A radioactive sample contains two different types of radioactive nucle...

    Text Solution

    |

  15. A overset(lambda)rarr B overset(2 lambda)rarr C T=0 ,N(0) , 0 , T...

    Text Solution

    |

  16. In a photeclectric experiment , when electromegnetic wave given by E=E...

    Text Solution

    |

  17. Nuclei X and Y convert into a stable nucleus Z. At t=0 , the number o...

    Text Solution

    |

  18. Single electron is orbiting in n^(th)orbit of hydrogen atom. The magne...

    Text Solution

    |