Home
Class 12
PHYSICS
Threshold wavelength for metal is 10,000...

Threshold wavelength for metal is `10,000Å`. If light of wavelength `5461Å` is incident on it, then stopping potential is 1.02 V, then value of Planck's constant is :

A

`6.45xx10^(-34)`J-sec

B

`6.54xx10^(-34)`J-sec

C

`6.60xx10^(-3)`J-sec

D

`6.67xx10^(-34)`J-sec

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • MOCK TEST-2

    MODERN PUBLICATION|Exercise MCQs|52 Videos

  • OSCILLATIONS

    MODERN PUBLICATION|Exercise RCQ|7 Videos

Similar Questions

Explore conceptually related problems

The threshold wavelength for a metal is 4000 Å. A radiation of wavelength 5000 Å is incident on the metal. Can it cause P.E.E?

When a piece of metal is illuminated by a monochromatics light of wavelength gamma then stopping potential is 3V_(s) . When same surface is illuminated by light of wavelength 2gamma , then stopping potential becomes V_(s) . The value of threshold wavelength for photoelectric emission will be

The threshold wavelength of photo sensitive metal is 5000 A .Find the velocity of the photoelectrons emitted by it when wavelength of 4000A is incident on it.

Minimum number of photons of light of wavelength 4000 Å which provide 1 J energy

The photo electric threshold for a metal surface is 5800 Å. Calculate the kinetic energy of a photoelectron, when a light of wavelength 4500 Å is incident on the metal surface.

MODERN PUBLICATION-MOCK TEST-3-MCQs
  1. A body of mass m is raised through a distance equal to the radius of t...

    Text Solution

    |

  2. When load is applied to a wire the extension is 3 mm, the extension in...

    Text Solution

    |

  3. If the work done in blowing a bubble of radius R is W, then the work d...

    Text Solution

    |

  4. Under constant temperature, graph between P and 1//V is a :

    Text Solution

    |

  5. There are three source of sound of equal intensities with frequencies ...

    Text Solution

    |

  6. The density of a liquid of coefficient of cubical expansion gamma is d...

    Text Solution

    |

  7. There are two spherical balls A and B of the same material with same s...

    Text Solution

    |

  8. Between the plates of a parallel plate capacitor of capacitance C, tw...

    Text Solution

    |

  9. A parallel plate capacitor of capacity 100 muF is charged by a battery...

    Text Solution

    |

  10. A straight conductor carries a current along the z-axis. Consider the ...

    Text Solution

    |

  11. A bar magnet with poles 25.0 cm apart and of pole strength 14.4 Am res...

    Text Solution

    |

  12. A superconducting ring of radius 'a' and inductance L is located in a ...

    Text Solution

    |

  13. An object is x times, the focal length of a concave mirror away from t...

    Text Solution

    |

  14. In a Young's double slit experiment, the fringes are displaced by a di...

    Text Solution

    |

  15. The unit of expression mu(0)in(0) are :

    Text Solution

    |

  16. Threshold wavelength for metal is 10,000Å. If light of wavelength 5461...

    Text Solution

    |

  17. The hydrogen atom in the ground state excited by means of light of lam...

    Text Solution

    |

  18. In above question, calculate the longest wavelength produced :

    Text Solution

    |

  19. The binary number corresponding to the decimal number 49 is :

    Text Solution

    |

  20. If I(r ) is reflected current and I(0) is the incident current of a tr...

    Text Solution

    |