Home
Class 12
PHYSICS
If a surface has work function of 3.00eV...

If a surface has work function of 3.00eV, the longest wavelength of light which will cause the emission of electrons is

A

`4.8xx10^-7`m

B

`5.99xx10^-7`m

C

`4.13xx10^-7`m

D

`6.84xx10^-7`m

Text Solution

Verified by Experts

The correct Answer is:
C
`(hc)/(lamda_(max))=3xx1.6xx10^-19J`
`implieslamda_(max)=(6.6xx10^-34xx3xx10^8)/(3xx1.6xx10^-19)`
`=4.125xx10^-7`m
Promotional Banner

Topper's Solved these Questions

  • PHOTOELECTRIC EFFECT

    CENGAGE PHYSICS|Exercise Multiple Correct|10 Videos

  • PHOTOELECTRIC EFFECT

    CENGAGE PHYSICS|Exercise Linked Comprehension|44 Videos

  • PHOTOELECTRIC EFFECT

    CENGAGE PHYSICS|Exercise Subjective|16 Videos

  • NUCLEI

    CENGAGE PHYSICS|Exercise QUESTION BANK|59 Videos

  • RAY OPTICS

    CENGAGE PHYSICS|Exercise DPP 1.6|12 Videos

Similar Questions

Explore conceptually related problems

The work function of a substance is "3.0eV" .The longest wavelength of light that can cause the emission of photoelectrons from this substance is approximately:

The work function of a substance is 3.68 eV. The longest wavelength of light that can cause photoelectrons emission from this substance is approximately

The work function of a substance is 4.0 eV. The longest wavelength of light that can cause photoelectron emission from this substance is approximately equal to

The work function of a substance is 4.0 eV The longest wavwlength of light that can cause photoelectron emission from this substance is approximately

The work function of a substance is 4.0 eV The longest wavwlength of light that can cause photoelectron emission from this substance is approximately

The work function of a substance is 4.0 eV. The longest wavelength of light that can cause photoelectron emission from this substance is approximately. (a) 540 nm (b ) 400nm (c ) 310 nm (d) 220 nm

The work functio of a substance is 4.0 eV . The longest wavelength of light that can cause photoelectron emission form this substance is approximately :

A radiation is incident on a metal surface of work function 2.3 eV. The wavelength of incident radiation is 60 nm, then the number of photoelectrons is

The work function of a substance is 1.6 ev. The longest wavelength of light that can produce potoemisson form the substance is

CENGAGE PHYSICS-PHOTOELECTRIC EFFECT-Single Correct
  1. If the intensity of radiation incident on a photocell be increased fou...

    Text Solution

    |

  2. the work function of metal is W and lamda is the wavelength of the inc...

    Text Solution

    |

  3. If a surface has work function of 3.00eV, the longest wavelength of li...

    Text Solution

    |

  4. In the experiment on photoelectric effect, the graph between EK(max) a...

    Text Solution

    |

  5. Monochromatic light incident on a metal surface emits electrons with k...

    Text Solution

    |

  6. The work function for sodium surface is 2.0eV and that for alluminium ...

    Text Solution

    |

  7. A metal surface is illuminated by a light of given intensity and frequ...

    Text Solution

    |

  8. Representing the stopping potential V along y-axis and ((1)/(lamda)) a...

    Text Solution

    |

  9. In the intercept on the y-axis is equal to

    Text Solution

    |

  10. Electrons taveling at a velocity of 2.4xx10^(6) ms^(-1) enter a region...

    Text Solution

    |

  11. A surface irradiated with light lamda=480 nm gives out electrons with ...

    Text Solution

    |

  12. In an experiment on the photoelectric effect, an evecuated photocell w...

    Text Solution

    |

  13. A metal surface in an evacuated tube is illuminated with monochromatic...

    Text Solution

    |

  14. If stopping potentials corresponding to wavelengths 4000A and 4500A ar...

    Text Solution

    |

  15. The photoelectric threshold of a certain metal is 3000A. If the radiat...

    Text Solution

    |

  16. The frequency and the intensity of a beam of light falling on the surf...

    Text Solution

    |

  17. The frequency of incident light falling on a photosensitive metal plat...

    Text Solution

    |

  18. Lights of two different frequencies whose photons have energies 1 and ...

    Text Solution

    |

  19. A proton when accelerated through a potential difference of V volt has...

    Text Solution

    |

  20. Given that a photon of light of wavelength 10,000A has an energy equal...

    Text Solution

    |