Home
Class 12
PHYSICS
Calculate the energy of a photon with mo...

Calculate the energy of a photon with momentum `3.3xx10^(-13)kg-ms^(-1)`. (given, planck's constant to be `6.6xx10^(-34)J-s`)

A

`7.3xx10^(4)J`

B

`9.9xx10^(-5)J`

C

`1.3xx10^(5)J`

D

`8.1xx10^(3)J`

Text Solution

Verified by Experts

The correct Answer is:
B
Given, `E//c=3.3xx10^(-12)kg-ms^(-1)`
So, `E=3.3xx10^(-13)xxc`
`=3.3xx10^(-13)xx3xx10^(8)=9.9xx10^(-5)J`
Promotional Banner

Topper's Solved these Questions

  • ELECTRONS AND PROTONS

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise Exercise 2|29 Videos

  • ELECTRONS AND PROTONS

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise MHT CET CORNER|19 Videos

  • ELECTRONS AND PROTONS

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise MHT CET CORNER|19 Videos

  • ELECTROMAGNETIC INDUCTION

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise MHT CET CONER|34 Videos

  • ELECTROSTATICS

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise MHT CET Corner|29 Videos

Similar Questions

Explore conceptually related problems

If the work function of a and is 3 eV, calculate the threshold wavelength of that metal. (Velocity of light =3xx10^(8)m//s Planck's constant= 6.63xx10^(-34)J-s,1eV=1.6xx10^(-19) )

The uncertainty of a particle in momentum is 3.3xx10^(-2)" kg "ms^(-1) . Calculate the uncertainty in its position. (h=6.6xx10^(-34)J-sec) .

Calculate the frequency of a photon, having energy 41.25 eV. (h=6.6xx10^(-34) Js) .

Calculate the frequency of a photon whose energy is 3xx10^(-19) J, Also , find its momentum.

If the total energy of radiation of frequency 10^(14)Hz is 6.63J , calculate the number of photons in the radiation. (Planck's constant =6.63xx10^(-34)J-s ).

The kinetic energy of the electron orbiting in the first excited state of hydrogen atom is 3.4 eV. Determine the de- broglie wavelength associated with it. Mass of electron= 9.1xx10^(-31)kg , Planck's constant= 6.63xx10^(-34)Js .

MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-ELECTRONS AND PROTONS-Exercise 1
  1. A metal surface of work function 1.07 eV is irradiated with light of w...

    Text Solution

    |

  2. represents a graph of most energetic photoelectrons K(max)(in eV) and ...

    Text Solution

    |

  3. Find the difference of kinetic energies of photoelectrons emitted from...

    Text Solution

    |

  4. When ultraviolet light of wavelength 100 nm is incident upon silver pl...

    Text Solution

    |

  5. Light of wavelength lamda strikes a photoelectric surface and electron...

    Text Solution

    |

  6. The energy of a photon corresponding to the visible light of maximum w...

    Text Solution

    |

  7. When a centimeter thick surface is illuminated with light of wavelengt...

    Text Solution

    |

  8. The work function for Al, K and is 4.28 eV, 2.30 eV and 5.65 eV respec...

    Text Solution

    |

  9. When photons of energy hv fall on an aluminium plate (of work function...

    Text Solution

    |

  10. A photocell with a constannt potential differnce of V voolt across it,...

    Text Solution

    |

  11. In a photoemissive cell, with exciting wavelength lambda, the faster e...

    Text Solution

    |

  12. In a photoemissive cell, with exciting wavelength lambda, the faster e...

    Text Solution

    |

  13. The threshold frequency of the metal of the cathode in a photoelectric...

    Text Solution

    |

  14. Calculate the energy of a photon with momentum 3.3xx10^(-13)kg-ms^(-1)...

    Text Solution

    |

  15. The energy that should be added to an electron, to reduce its de-Brogl...

    Text Solution

    |

  16. A parallel beam of light is incident normally on a plane surface absor...

    Text Solution

    |

  17. A particle of mass 1 mg has the same wavelength as an electron moving ...

    Text Solution

    |

  18. Monochromatic light of frequency 6.0 xx 10^(14) Hz is produced by a la...

    Text Solution

    |

  19. Maxwell's equations of electromagnetism and hertz experiments on gener...

    Text Solution

    |

  20. If 5% of the energy supplied to a bulb is irradiated as visible light,...

    Text Solution

    |