Home
Class 12
PHYSICS
When photons of energy 4.25eV strike the...

When photons of energy 4.25eV strike the surface of a metal A, the ejected photoelectrons have maximum kinetic energy, `T_A` (expressed in eV) and deBroglie wavelength `lambda_A`. The maximum kinetic energy of photoelectrons liberated from another metal B by photons of energy 4.20V is `T_B = T_A -1.50eV`. If the deBroglie wavelength of those photoelectrons is `lambda_B = 2lambda_A` then

Text Solution

Verified by Experts

The correct Answer is:
0.5
Promotional Banner

Topper's Solved these Questions

  • Current Electricity

    CENGAGE PHYSICS|Exercise QUESTION BANK|40 Videos
  • ELECTRIC CHARGES AND FIELDS

    CENGAGE PHYSICS|Exercise QUESTION BANK|40 Videos

Similar Questions

Explore conceptually related problems

When photon of energy 25eV strike the surface of a metal A, the ejected photelectron have the maximum kinetic energy photoelectrons have the maximum kinetic energy T_(A)eV and de Brogle wavelength lambda_(A) .The another kinetic energy of photoelectrons liberated from another metal B by photons of energy 4.76 eV is T_(B) = (T_(A) = 1.50) eV .If the de broglie wavelength of these photoelectrons is lambda_(B) = 2 lambda_(A) then i. (W_(B))_(A) = 2.25 eV II. (W_(0))_(B) = 4.2 eV III T_(A) = 2.0 eV IV. T_(B) = 3.5 eV

When photones of energy 4.0 eV fall on the surface of a metal A, the ejected photoelectrons have maximum kinetic energy T_(A) ( in eV) and a de-Broglie wavelength lambda_(A) . When the same photons fall on the surface of another metal B, the maximum kinetic energy of ejected photoelectrons is T_(B) = T_(A) -1.5eV . If the de-Broglie wavelength of these photoelectrons is lambda_(B) =2 lambda _(A) , then the work function of metal B is

The maximum kinetic energy of a photoelectron is 3 eV. What is its stopping potential ?

photons of energy 4.25 eV strike the surface of metal A, the ejection photoelectric have maximum kinetic energy T_(A) eV energy 4.70 eV is T_(B) = (T_(A) - 1.50) eV if the de Brogle wavelength of these photoelec tron is lambda_(B) = 2 lambda_(A) , then

When a radiation of energy 5eV falls on a surface,the emitted photoelectrons have a maximum kinetic energy of 3eV .The stopping potential is

CENGAGE PHYSICS-DUAL NATURE OF RADIATION AND MATTER-QUESTION BANK
  1. Work function of potassium metal is 2.30 eV . When light of frequency ...

    Text Solution

    |

  2. The threshold frequency for a certain photosensitive metal is v(0). Wh...

    Text Solution

    |

  3. X-rays are incident normally on a crystal of lattice constant 0.6nm. T...

    Text Solution

    |

  4. The de-Broglie wavelength of electrons striking the cathode to produce...

    Text Solution

    |

  5. Suppose the energy of Ka X-rays of two elements P and Q are 826.2eV an...

    Text Solution

    |

  6. What is the wavelength of a beam of X -rays (in A^o ) which is difted ...

    Text Solution

    |

  7. Light of wavelength lambda from a small 0.5 mW He-Ne laser source is u...

    Text Solution

    |

  8. A plate of mass 20mg is in equilibrium in air due to force exerted by ...

    Text Solution

    |

  9. Moseley's law for K(alpha) photon is given by sqrt(v)=a(Z-b) where a i...

    Text Solution

    |

  10. When photons of energy 4.25eV strike the surface of a metal A, the eje...

    Text Solution

    |

  11. In the figure shown, electromagnetic radiations of wavelength 200 nm ...

    Text Solution

    |

  12. A smail plate of area 1 cm^(2) is placed at a distance of (1)/(sqrt(pi...

    Text Solution

    |

  13. When a monochromatic point source of light is at a distance 0.2m from ...

    Text Solution

    |

  14. A small metal plate of area 2 cm^(2) is placed at a distance of 2 m fr...

    Text Solution

    |

  15. A light of wavelength 3540 A^o falls on a metal having work function o...

    Text Solution

    |

  16. A cooling object was emitting radiations of time varying wavelength la...

    Text Solution

    |

  17. A parallel. beam of light of intensity I is incident normally on a pla...

    Text Solution

    |

  18. (An)^(2) (X) -ray tube operates at 50 (kV). Consider that at each coll...

    Text Solution

    |

  19. In a photoelectric set up, the most energetic photoelectron from the m...

    Text Solution

    |

  20. A metal plate has work function of 6eV. Light of wavelength 200 nm fal...

    Text Solution

    |