Home
Class 12
PHYSICS
A light detector has an absorbing area o...

A light detector has an absorbing area of `3.00 xx 10^(-6) m^(2)` and absorbs `50%` of the incident light, which is at wavelength 600 nm. The detector faces an isotropic source, 12.0 m from the source. The energy E emitted by the source versus time t is given in Fig. 37-19 Problem 28.
At what rate are photons absorbed by the detector?

Text Solution

Verified by Experts

6.0 photons/s
Promotional Banner

Topper's Solved these Questions

  • PHOTONS AND MATTER WAVES

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS (Single Correct Choice Type)|47 Videos
  • PHOTONS AND MATTER WAVES

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS (More than One Correct Choice Type)|5 Videos
  • PHOTONS AND MATTER WAVES

    RESNICK AND HALLIDAY|Exercise Check points|3 Videos
  • OSCILLATIONS

    RESNICK AND HALLIDAY|Exercise Practice Questions|57 Videos
  • RELATIVITY

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS (Integer Type)|5 Videos

Similar Questions

Explore conceptually related problems

A light detector (your eye) has an area of 2.00 xx 10^(-6) m^(2) and absorbs 80% of the incident light, which is at wavelength 500 nm. The detector faces an isotropic source, 3.00 m from the source. If the detector absorbs photons at the rate of exactly 4.000 s^(-1) , at what power does the emitter emit light?

Spherical waves are emitted from a 1.0 W source in an isotropic non-absorbing medium. What is the wave intesity 1.0 m from the source?

A monochromatic source emitting light of wavelength, 600nm, has a power output of 66W. Caculate the number of photons emitted by this source in 2minuts. Use h=6.6xx10(-34)Js .

A helium-neon laser emits red light at wavelength lambda =633 nm in a beam of diameter 3.0 mm and at an energy-emission rate of 5.0 mW. A detector in the beam's path totally absorbs the beam. At what rate per unit area does the detector absorb photons?

(a) A 100 W sodium Lamp radiates energy uniformly in all directions. The Lamp is located at the centre of a large sphere , that absorbs all the sodium of a large sphere , that absorbs all the sodium light which is incident on it . The wavelength of the sodium light is 589 nm (i) What is the energy associated per photon with the sodium light ? (ii) At what rate are the photons delivered to the sphere ? (b) Light of frequency 7.21 xx10^(14) Hz is incident on a metal surface . Electrons with a maximum speed of 6.0xx10^(5) ms^(-1) are ejected from the surface What is the threshold frequency for photo emission of electron ? Given , h= 6.63xx10^(-34) Js , m_c=9.1xx10^(-310 Kg

Two slits are separated by 2.00 xx 10^(-5) m. They are illuminated by light of wavelength 5.60 xx 10^(-7) m. If the distance from the slits to the screen is 6.00 m, what is the separation between the central bright fringe and the third dark fringe?

What is the intensity at radial distances (a) 2.50 m and (b) 6.00 m from an isotropic point source of sound that emits energy at the rate 12.0 W, assuming no energy absorption by the surrounding air?

RESNICK AND HALLIDAY-PHOTONS AND MATTER WAVES-PROBLEMS
  1. What is the wavelength of (a) a photon with energy 1.00 eV, (b) an ele...

    Text Solution

    |

  2. The wavelength associated with the cutoff frequency for silver is 325 ...

    Text Solution

    |

  3. A light detector has an absorbing area of 3.00 xx 10^(-6) m^(2) and ab...

    Text Solution

    |

  4. At what rate does the Sun emit photons? For simplicity, assume that th...

    Text Solution

    |

  5. What (a) frequency, (b) photon energy, and (c) photon momentum magnitu...

    Text Solution

    |

  6. The beam emerging from a 1.5 W argon laser (lambda=515 nm) has a diame...

    Text Solution

    |

  7. An electron moves through a region of uniform electric potential of -2...

    Text Solution

    |

  8. (a) If the work function for a certain metal is 1.8 e V, what is the s...

    Text Solution

    |

  9. How fast must an electron move to have a kinetic energy equal to the p...

    Text Solution

    |

  10. A special kind of light bulb emits monochromatic light of wavelength 6...

    Text Solution

    |

  11. The stopping potential for electrons emitted from a surface illuminate...

    Text Solution

    |

  12. What is the photon energy for yellow light from a highway sodium lamp ...

    Text Solution

    |

  13. You wish to pick an element for a photocell that will operate via the ...

    Text Solution

    |

  14. Light strikes a sodium surface, causing photoelectric emission. The st...

    Text Solution

    |

  15. In a photoelectric experiment using a sodium surface, you find a stopp...

    Text Solution

    |

  16. Singly charged sodium ions are accelerated through a potential differe...

    Text Solution

    |

  17. A satellite in Earth orbit maintains a panel of solar cells of area 2....

    Text Solution

    |

  18. Light of wavelength 200 nm shines on an aluminum surface, 4.20 eV is r...

    Text Solution

    |

  19. At one time, the metre was defined as 1650763.73 wavelengths of the or...

    Text Solution

    |

  20. X rays with a wavelength of 71 pm are directed onto a gold foil and ej...

    Text Solution

    |