Home
Class 12
PHYSICS
The characteristic distance at which qua...

The characteristic distance at which quantum gravitational effect are significant the planck length can be determined form a suitable combination of the fundamental physical constant G h and c which of the followng correctly gives the planck length ?

A

`Gh^2c^3`

B

`G^2hc`

C

`1/(G^2 hc)`

D

`((Gh)/(c^3))^(1//2)`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • UNITS AND MEASUREMENT

    AAKASH SERIES|Exercise PRACTICE EXERCISE|45 Videos
  • UNITS AND MEASUREMENT

    AAKASH SERIES|Exercise EXERCISE - I|156 Videos
  • SEMICONDUCTOR DEVICES

    AAKASH SERIES|Exercise EXERCISE - III|3 Videos
  • UNITS AND MEASUREMENTS

    AAKASH SERIES|Exercise EXERCISE -3|66 Videos
AAKASH SERIES-UNITS AND MEASUREMENT-EXERCISE - II
  1. A liquid drop of density rho , radius r, and surface tension sigma osc...

    Text Solution

    |

  2. The volume of a liquid (V) flowing per second through a cylindrical tu...

    Text Solution

    |

  3. The characteristic distance at which quantum gravitational effect are ...

    Text Solution

    |

  4. The dimensions of resistivity in terms of M, L, T and Q, where Q stand...

    Text Solution

    |

  5. The distance travelled by a particle in n^(th) second is Sn =u+a/2 (2n...

    Text Solution

    |

  6. The position of a particle at time t is given by the equation x(t) = V...

    Text Solution

    |

  7. If J is the angular momentum and E is the kinetic energy, then (J^2)/E...

    Text Solution

    |

  8. If L is the inductance, C is the capacitance and R is the resistance, ...

    Text Solution

    |

  9. If h is Planck's constant and lambda is the wave length,h/(lambda) has...

    Text Solution

    |

  10. Which of the following combinations of three different physical quanti...

    Text Solution

    |

  11. Which of the following is wheat fruit?

    Text Solution

    |

  12. A quantity X is given by epsi(0)L(DeltaV)/(DeltaT) where epsi(0) is th...

    Text Solution

    |

  13. The radius of a sphere is measured as (10 +- 0.02%) cm. The error in ...

    Text Solution

    |

  14. If length and breadth of a plane are (40 + 0.2) and (30 +- 0.1) cm, th...

    Text Solution

    |

  15. When 10 observation are taken the random error is x when 100 observati...

    Text Solution

    |

  16. The diameter of a wire as measured by a screw gauge was found to be 1....

    Text Solution

    |

  17. Two uniform solid spheres of equal radii R, but mass M and 4 M have a ...

    Text Solution

    |

  18. The error in the measurement of the length of a simple pendulum is 0.1...

    Text Solution

    |

  19. The length and breadth of a rectangular are 25 cm and 10 cm respective...

    Text Solution

    |

  20. If the length of a cylinder is measured to be 4.28 cm with an error of...

    Text Solution

    |