Home
Class 12
PHYSICS
There are N(1) photons of frequency v(1)...

There are `N_(1)` photons of frequency `v_(1)`, in a beam of light, In another light beam of equal energy there are `N_(2)` photons of frequency `v_(2)`. Then `N_(1)` and `N_(2)` are related as

A

`(N_(1))/(N_(2))=1`

B

`(N_(1))/(N_(2))=(v_(1))/(v_(2))`

C

`(N_(1))/(N_(2))=(v_(2))/(v_(1))`

D

`(N_(1))/(N_(2))=sqrt((v_(2))/(v_(1)))`

Text Solution

Verified by Experts

The correct Answer is:
C

Since they have same energy, `E_(1)=E_(2)`
`:.N_(1)hv_(1)=N_(2)hv_(2)" " :.(N_(1))/(N_(2))=(v_(2))/(v_(1))`
Promotional Banner

Topper's Solved these Questions

  • ELECTRONS AND PHOTONS

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP - 17|15 Videos
  • ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENTS

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP - 16|30 Videos
  • ELECTROSTATICS

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP|20 Videos

Similar Questions

Explore conceptually related problems

There are n_(1) photons of frequency gamma_(1) in a beam of light . In an equally energentic beam , there are n_(2) photons of frequency gamma_(2) . Then the correct relation is

n_(R) and n_(g) give the number of photons in red and green beams of light. If the two beams have the same energy, then

The reactance of a capacitor is X_(1) for frequency n_(1) and X_(2) for frequency n_(2) then X_(1) : X_(2) is

Photon of frequency v has a momentum associated with it. If c is the velocity of light, the momentum is:

Photon of frequency v has a momentum associated with it . If c is the velocity of light , the momentum is

Three similar wires of frequency n_(1),n_(2) and n_(3) are joined to make one wire. Its frequency will be

If n_(r ) and n_(b) are the number of photons of red and blue light respectively with same energy, then

MARVEL PUBLICATION-ELECTRONS AND PHOTONS -TEST YOUR GRASP - 17
  1. There are N(1) photons of frequency v(1), in a beam of light, In anoth...

    Text Solution

    |

  2. The energy of a photon of wavelength 4000 Å is (use h=6.66xx10^(-34...

    Text Solution

    |

  3. In a photoelectric experiment, the reciprocal of the slope of the st...

    Text Solution

    |

  4. The momentum of a photon of an electromagnetic radiation is 3.3xx10^(-...

    Text Solution

    |

  5. If the threshold frequency for photoemission on a metal corresponds t...

    Text Solution

    |

  6. Photons of energy 5.5 eV are incident on a metal surface. If the stopp...

    Text Solution

    |

  7. When light of energy 2.5 eV falls on a metal surface, the maximum K.E....

    Text Solution

    |

  8. The threshold energy of a surface is 2 eV. When irradiated with some r...

    Text Solution

    |

  9. Sodium and copper have work functions of 2.3 eV and 4.5 eV. The ratio ...

    Text Solution

    |

  10. The surface of a metal is illuminated with light of wavelength 400 nm....

    Text Solution

    |

  11. The current in a photocell can be just reduced to zero by a potential ...

    Text Solution

    |

  12. A lamp is placed at a distance of 8 cm from a photocell and the microa...

    Text Solution

    |

  13. The cathode of a photoelectric cell is changed such that the work func...

    Text Solution

    |

  14. The wavelength of the photons are 4500 Å and 6000 Å. The ratio of thei...

    Text Solution

    |

  15. An AIR station is broadcasting the waves of wavelength 300 metres. If ...

    Text Solution

    |

  16. For a photosensitive metal surface the graph of the stopping potential...

    Text Solution

    |