Home
Class 12
PHYSICS
Light of wavelength 3,500 overset @A is ...

Light of wavelength `3,500 overset @A` is incident on two metals A and B.Which metla will yield photo - electrons,if their work functions are 4.2 eV and 1.9 eV respectively?

A

both 1 and 2 emit photoelectrons

B

Only 2 emit photoelectrons

C

Only 1 emit photoelectrons

D

neither 1 nor 2 emit photoelectrons

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • Particle Nature of Radiation

    MODERN PUBLICATION|Exercise EXERCISE|94 Videos

  • Optical Instruments

    MODERN PUBLICATION|Exercise EXERCISE|100 Videos

  • Polarisation of Light

    MODERN PUBLICATION|Exercise EXERCISE|50 Videos

Similar Questions

Explore conceptually related problems

Consider a 20 W bulb emitting light of wavelength 5000 oversetcircA and shining on a metal surface kept at a distance 2m . Assume that the metal surface work function of 2eV and that each atom on the metal surface can be treated as a cirular disc of radius 1.5 A. will there be photoelectric emission?

Consider a 20 W bulb emitting light of wavelength 5000 oversetcircA and shining on a metal surface kept at a distance 2m . Assume that the metal surface work function of 2eV and that each atom on the metal surface can be treated as a cirular disc of radius 1.5 A. How much time would be required by the atomic disc to receive enrgy equal to work function.

Light of wavelength 5000 overset @A falls on a photosensitive plate with work function 1.9 eV. Find energy of photon in eV(electron Volt)

Light of wavelength 500 nm falls on a metal whose work function is 1.9 eV. find the kinetic energy of the photo electrons emitted.

A radiation of 5000 overset @ A is incident on metal surface whose work- function is 1.2 eV. find out the value of stopping potential.

Light of wavelength 500 nm falls on a metal whose work function is 1.9 eV. find the energy of the Photon in eV

light of wavelength 2200 overset@A (angstorm) falls on photosensitive plate with work function 4.1 eV. Find energy of photon in eV (electron Volt) Find maximum kinetic energy of photoelectron and stopping potetial.

MODERN PUBLICATION-Particle Nature of Radiation-EXERCISE
  1. Light of wavelength 3,500 overset @A is incident on two metals A and B...

    Text Solution

    |

  2. What is photoelectric effect? State it laws?

    Text Solution

    |

  3. What is photoelectric effect? State it laws?

    Text Solution

    |

  4. State the four laws of photoelectric emission.

    Text Solution

    |

  5. Explain the effect of increase of intensity of incident radiation on p...

    Text Solution

    |

  6. With refrernece to the photoelectric effect,define the terms 'work fun...

    Text Solution

    |

  7. With refrernece to the photoelectric effect,define the terms 'work fun...

    Text Solution

    |

  8. What is phtotelecric effect?Explain the effect of increase of frequen...

    Text Solution

    |

  9. What is phtotelecric effect?Explain the effect of increase of intensi...

    Text Solution

    |

  10. Explain 'stopping potential' and 'threshold frequency' in photoelectri...

    Text Solution

    |

  11. Plot a graph showing the variation of photoelectric current with anode...

    Text Solution

    |

  12. Does the stopping potential in photoelectric emissiondepend upon the i...

    Text Solution

    |

  13. Does the stopping potential in photoelectric emissiondepend upon the f...

    Text Solution

    |

  14. In a plot of photoelectric current versus anode potential how does The...

    Text Solution

    |

  15. In a plot of photoelectric current versus anode potential how does the...

    Text Solution

    |

  16. In a plot of photoelectric current versus anode potential how does pho...

    Text Solution

    |

  17. Define the term threshold frequency and stopping potential in relation...

    Text Solution

    |

  18. Define the term threshold frequency and stopping potential in relation...

    Text Solution

    |

  19. State the dependence of work function on kinetic energy of electrons e...

    Text Solution

    |

  20. Explain 'stopping potential' and 'threshold frequency' in photoelectri...

    Text Solution

    |

  21. Explain briefly, how classical theory could not explain the phenomenon...

    Text Solution

    |