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:
C
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC WAVES

    KUMAR PRAKASHAN|Exercise BOARD.S QUESTION PAPER MARCH - 2020 (PART - B) SECTION - A|10 Videos
  • ELECTROMAGNETIC WAVES

    KUMAR PRAKASHAN|Exercise BOARD.S QUESTION PAPER MARCH - 2020 (PART - B) SECTION - B|8 Videos
  • ELECTROMAGNETIC WAVES

    KUMAR PRAKASHAN|Exercise SECTION D MULTIPLE CHOICE QUESTIONS (MCQs) MCQs asked in Competitive Exams|23 Videos
  • ELECTROMAGNETIC INDUCTION

    KUMAR PRAKASHAN|Exercise Section D MCQs (MCQs asked in Competitive Exams )|38 Videos
  • ELECTROSTATIC POTENTIAL AND CAPACITANCE

    KUMAR PRAKASHAN|Exercise Section D ( MCQs asked in Cometitive Exams )|39 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

1 mole photon having frequency 4.0 xx 10^(14) Hz find energy

KUMAR PRAKASHAN-ELECTROMAGNETIC WAVES-BOARD.S QUESTION PAPER MARCH - 2020 (PART - A)
  1. By applying electric field of the order of………..Vm^-1 to a metal, elect...

    Text Solution

    |

  2. Value of stopping potential depends on……. Of incident light.

    Text Solution

    |

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

    Text Solution

    |

  4. is found experimentally that 13.6 eV energy is required to separate a ...

    Text Solution

    |

  5. To excite the hydrogen atom from its ground state to second excited st...

    Text Solution

    |

  6. What is the shortest wavelength present in the Paschen series of spect...

    Text Solution

    |

  7. In case of head on collision, when the impact parameter is minimum the...

    Text Solution

    |

  8. Chlorine has two isotopes having masses 34.98u and 36.98u. The relativ...

    Text Solution

    |

  9. The binding energy per nucleon is almost constant for the nuclei havin...

    Text Solution

    |

  10. Tritium has half life of 12.5 years undergoing beta decay. What fracti...

    Text Solution

    |

  11. In an n type silicon, which of the following statements is true:

    Text Solution

    |

  12. When a forward bias is applied to a p-n junction, it……

    Text Solution

    |

  13. In half wave rectification, what is the output frequency if the input ...

    Text Solution

    |

  14. ……as a impurity, when added in Si or Ge P- type semiconductor is obtai...

    Text Solution

    |

  15. The charge equivalent to 6 times 10^18 electrons is

    Text Solution

    |

  16. The ratio of electric force and gravitational force between a proton a...

    Text Solution

    |

  17. Unit of surface charge density (sigma) is…….

    Text Solution

    |

  18. Electric field due to dipole at large distance ( r) falls off as……..

    Text Solution

    |

  19. Value of dielectric strength of air is………Vm^-1

    Text Solution

    |

  20. Three capacitors of 2pF,3pF and 4pF are connected in parallel . What i...

    Text Solution

    |