Home
Class 12
PHYSICS
The threshold wavelength for photoelectr...

The threshold wavelength for photoelectric emission for a material is `5200 A^(@)`. Will the photoelectrons be emitted when this material is illuminated with monochromatic radiation from 1 watt ultra violet lamp?

A

`50` watt infrared lamp

B

`1` watt infrared lamp

C

`50` watt ultraviolet lamp

D

`1` watt ultraviolet lamp

Text Solution

Verified by Experts

`lambda lt 5200Å`
Promotional Banner

Topper's Solved these Questions

  • GMP ASSESMENT

    FIITJEE|Exercise Comprehension|58 Videos

  • GMP ASSESMENT

    FIITJEE|Exercise Numerical Based|61 Videos

  • GMP ASSESMENT

    FIITJEE|Exercise Assertion & Reason|15 Videos

  • GENERAL PHYSICS

    FIITJEE|Exercise MATRIX MATCH TYPE|3 Videos

  • GRAVITATION

    FIITJEE|Exercise Numerical based Question|2 Videos

Similar Questions

Explore conceptually related problems

The threshold wavelength for photoelectric emission from a material is 5200 Å . Photoelectrons will be emitted when this material is illuminated with monochromatic radiation from a (a) 50 W infrared lamp (b) 1 W infrared lamp (c ) 50 W ultraviolet lamp (d) 1 W ultraviolet lamp .

The threshold wavelength for photoelectric from a material is 5200 Å photoelectric will be emittillumnated with when this meterial is illiuminated with monecharnatic radiation from a

Threshold wavelength of a photoelectric emission from a material is 600nm. Which of the following illuminating source will emit photoelectrons?

The threshold wavelength for a photosensitive metal plate is 5000 Å. Photoelectrons will be emitted from it if it is irradiated by light from a

The threshold wavelength for a metal is 5000 Å . The maximum K.E. of the photoelectrons emitted when ultraviolet ligh of wavelength 2500 Å falls on it is

The threshold wavelength for photoelectric emission in tungsten is 2300 Å. What wavelength of light must be used to eject electrons with a maximum energy of 1.5 eV?

The threshold wavelength for emission of photoelectrons from a metal surface is 6xx10^(-7)m .The work function of the material of the metal surface is.

FIITJEE-GMP ASSESMENT-Multiple Question
  1. A uniform circular loop of radius a and resistance R palced perpendicu...

    Text Solution

    |

  2. A conducting wire of length l and mass m can slide without friction on...

    Text Solution

    |

  3. Two thin slabs of refractive indicies mu(1) and mu(2) are placed parll...

    Text Solution

    |

  4. A bi-convex lens is placed between a light source and a concave mirror...

    Text Solution

    |

  5. A particle moves towards a concave mirror of focal length 30cm along i...

    Text Solution

    |

  6. Young's double-slit experiment is conducted in water (mu(1)) as shown ...

    Text Solution

    |

  7. A solid transparent sphere made of glass (R.I.=mu gt 1) has a small, o...

    Text Solution

    |

  8. A luminous point object is placed at O, whose image is formed at I as ...

    Text Solution

    |

  9. When photons of energy (hc)/(lamda) fall on a metal surface, photoelec...

    Text Solution

    |

  10. The threshold wavelength for photoelectric emission for a material is ...

    Text Solution

    |

  11. Photoelectric effect supports quantum nature of light because (a) th...

    Text Solution

    |

  12. When photons of energy 4.25 eV strike the surface of metal A, the ejec...

    Text Solution

    |

  13. The potential difference applied to an X-ray tube is increased. As a r...

    Text Solution

    |

  14. Threshold wavelength of certain metal is lamda0 A radiation of wavelen...

    Text Solution

    |

  15. A frame a bed and a sliding rod PQ of resistance R, start moving with ...

    Text Solution

    |

  16. Two spheres A and B have the same radii but the capacity of A is grea...

    Text Solution

    |

  17. A canon of mass M is mounted on an east west frictionless railway trac...

    Text Solution

    |

  18. A particle is launched from a height 8R above the surface of earth and...

    Text Solution

    |

  19. A rod AB of mass M and length L lies on smooth horizontal table impuls...

    Text Solution

    |

  20. A rod of mass m and length l suspended from a point swings in a vertic...

    Text Solution

    |