Home
Class 12
PHYSICS
Monochromatic light of frequency 6 times...

Monochromatic light of frequency `6 times 10^14 Hz` is produced by laser. Each photon has an energy=…….

A

`4xx10^(-19)`

B

`6xx10^(14)`

C

`4xx10^(-20)`

D

`6xx10^(-14)`

Text Solution

Verified by Experts

The correct Answer is:
A
`v=6xx10^(14)` Hz
Energy of each photon,
`E=hv=6.6xx10^(-34)xx6xx10^(14)`
`=4xx10^(-19)J`
Promotional Banner

Topper's Solved these Questions

  • DUAL NATURE OF RADIATION AND MATTER

    KUMAR PRAKASHAN|Exercise Section-D (MCQs asked in GUJCET/Board Exam)|1 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    KUMAR PRAKASHAN|Exercise Section-D (MCQs asked in CBSE-PMT,AIPMT,NEET)|1 Videos

  • CURRENT ELECTRICITY

    KUMAR PRAKASHAN|Exercise SECTION [D] MULTIPLE CHOICE QUESTIONS (MCQs) (MCQs ASKED IN BOARD EXAM AND GUJCET)|23 Videos

  • ELECTRIC CHARGES AND FIELDS

    KUMAR PRAKASHAN|Exercise SECTION D MCQS ASKED IN COMPETITIVE EXAMES (MCQS AKSED IN BOARD EXAM AND GUJCET)|14 Videos

Similar Questions

Explore conceptually related problems

Monochromatic light of frequency 6.0xx10^(14) Hz is produced by a laser. The power emitted is 2.0 xx10^(-3) W. (a) What is the energy of a photon in the light beam? (b) How many photons per second, on an average, are emitted by the source?

Monochromatic light of frequency 6.0xx10^(14) Hz is produced by a laser.The power emitted is 2.0xx10^(-3) W. (a)What is the energy of a photon in the light beam?(b)How many photons per second.on an average ,are emitted by the source?

Monochromatic light frequency 5.0xx10^(14) Hz is produced by a laser.The power emitted is 66 W. How many photons per second,on an average ,are emitted by the source?

Monochromatic light of wavelength 632.8 nm is produced by a helium-neon laser. The power emitted is 9.42 mW. (a) Find the energy and momentum of each photon in the light beam, (b) How many photons per second, on the average, arrive at a target irradiated by this beam? (Assume the beam to have uniform cross-section which is less than the target area), and (c) How fast does a hydrogen atom have to travel in order to have the same momentum as that of the photon?

In the figure shown S is a point monochromatic light source of frequency 6xx10^(14)Hz .M is a concave mirror of radius of curvature 20 cm and L is a thin converging lens of focal length 3.75 cm AB is the principal axis of M and L. Light reflected from the mirror and refracted from the lens in succession reaches the screen. An interference pattern is obtained on the screen by this arrangement. Q. Distance between two coherent sources whichmakes interference pattern on the screen is

In the figure shown S is a point monochromatic light source of frequency 6xx10^(14)Hz .M is a concave mirror of radius of curvature 20 cm and L is a thin converging lens of focal length 3.75 cm AB is the principal axis of M and L. Light reflected from the mirror and refracted from the lens in succession reaches the screen. An interference pattern is obtained on the screen by this arrangement. Q. Fringe width is

In the figure shown S is a point monochromatic light source of frequency 6xx10^(14)Hz .M is a concave mirror of radius of curvature 20 cm and L is a thin converging lens of focal length 3.75 cm AB is the principal axis of M and L. Light reflected from the mirror and refracted from the lens in succession reaches the screen. An interference pattern is obtained on the screen by this arrangement. Q. If the lens is replaced by another converging lens of focal length (10)/(3)cm and the lens is shifted towards right by 2.5 cm then

KUMAR PRAKASHAN-DUAL NATURE OF RADIATION AND MATTER-Section-D (MCQs asked in AIIMS)
  1. If particle mentioned below moves with same velocity which will have h...

    Text Solution

    |

  2. Work function of metal is 1.6 eV for which maximum wavelength photoele...

    Text Solution

    |

  3. The K.E. of photoelecttron emitted from a metal are K(1) and K(2) ,whe...

    Text Solution

    |

  4. A particle of mass m kg and charge q coulomb is accelerated through V ...

    Text Solution

    |

  5. When a strong electric field of approximately ……is applied on the meta...

    Text Solution

    |

  6. If kinetic energy of emitted electron is made double then its de-Brogl...

    Text Solution

    |

  7. Threshold wavelength for lithium metal is 6250 Å wavelength of inciden...

    Text Solution

    |

  8. Object of 100 g mass moves with velocity of 36 km/hr .de-Broglie wavel...

    Text Solution

    |

  9. The wavelength of de-Broglie wave associated with a neutron of mass m ...

    Text Solution

    |

  10. Photons of energy 1 eV and 2.5 eV sucesseively illuminate a metal,whos...

    Text Solution

    |

  11. To change de-Broglie wavelength from 0.5xx10^(10)m to 1xx10^(-10)m its...

    Text Solution

    |

  12. The threshold wavelength of Na element is 6800 Å.Its work function is ...

    Text Solution

    |

  13. In discharge tube with increase in number density of gas intensity of ...

    Text Solution

    |

  14. In davision -Germer experiment electron emitted from filament is accel...

    Text Solution

    |

  15. Wavelength of photon having 35 keV energy will be……..(h=6.625xx10^(-34...

    Text Solution

    |

  16. Uncertainty in position of electron is 10^(-10) m. uncertainty in its ...

    Text Solution

    |

  17. If energy of photon of 6000 Å is 3.2xx10^(-19) J then energy of photon...

    Text Solution

    |

  18. Work function of ……is the lowest.

    Text Solution

    |

  19. By applying electric field of the order of………..Vm^-1 to a metal, elect...

    Text Solution

    |

  20. Monochromatic light of frequency 6 times 10^14 Hz is produced by laser...

    Text Solution

    |