Home
Class 12
PHYSICS
The energy of a photon is equal to the k...

The energy of a photon is equal to the kinetic energy of a
proton. The energy of the photon is E. Let `lambda_1`be the de-Broglie wavelength of the
proton and `lambda_2` be the wavelength of the photon. The ratio `(lambda_1)/(lambda_2)` is proportional to
(a)`E^0` (b) `E^(1//2)` (c ) `E^(-1)` (d)`E^(-2)`

A

`E^0`

B

`E^(1)/(2)`

C

`E^-1`

D

`E^-2`

Text Solution

Verified by Experts

The correct Answer is:
B

`lamda_1=(h)/(p)=(h)/(sqrt(2mE))`
`lamda_2=(hc)/(E)=E^((1)/(2))`
Promotional Banner

Topper's Solved these Questions

  • PHOTOELECTRIC EFFECT

    CENGAGE PHYSICS ENGLISH|Exercise Multiple Correct|10 Videos
  • PHOTOELECTRIC EFFECT

    CENGAGE PHYSICS ENGLISH|Exercise Linked Comprehension|44 Videos
  • PHOTOELECTRIC EFFECT

    CENGAGE PHYSICS ENGLISH|Exercise Subjective|16 Videos
  • NUCLEAR PHYSICS

    CENGAGE PHYSICS ENGLISH|Exercise ddp.5.5|14 Videos
  • RAY OPTICS

    CENGAGE PHYSICS ENGLISH|Exercise DPP 1.6|12 Videos

Similar Questions

Explore conceptually related problems

The energy of a photon of wavelength lambda is

The De Broglie wavelength of a particle is equal to that of a photon, then the energy of photon will be

If the kinetic energy of a moving particle is E , then the de-Broglie wavelength is

Find the ratio of kinetic energy of the particle to the energy of the photon . If the de Broglie wavelength of a particle moving with a velocity 2.25xx 10^(8) m//s is equal to the wavelength of photon .

A proton has kinetic energy E = 100 keV which is equal to that of a photon. The wavelength of photon is lamda_(2) and that of proton is lamda_(1) . The ratio of lamda_(2)//lamda_(1) is proportional to

A photon and an electron have equal energy E . lambda_("photon")//lambda_("electron") is proportional to

A photon and an electron have equal energy E . lambda_("photon")//lambda_("electron") is proportional to

In an excited state of hydrogen like atom an electron has total energy of -3.4 eV . If the kinetic energy of the electron is E and its de-Broglie wavelength is lambda , then

In an excited state of hydrogen like atom an electron has total energy of -3.4 eV . If the kinetic energy of the electron is E and its de-Broglie wavelength is lambda , then

The kinetic energy of a particle is equal to the energy of a photon. The particle maves at 5% of the speed of light . The ratio of the photon wavelength to the de Broglie wavelength of the particle is [No nee to use reletivistic formula for particle.]

CENGAGE PHYSICS ENGLISH-PHOTOELECTRIC EFFECT-Single Correct
  1. With respect to electromegnetic theory of light, the photoelectric eff...

    Text Solution

    |

  2. Two protons are having same kinetic energy. One proton enters a unifo...

    Text Solution

    |

  3. The energy of a photon is equal to the kinetic energy of a proton. T...

    Text Solution

    |

  4. Up to what potential V can a zinc ball (work function 3.74 eV) removed...

    Text Solution

    |

  5. A sensor is exposed for time t to a lamp of power P placed at a distan...

    Text Solution

    |

  6. A photon has same wavelength as the de Broglie wavelength of electrons...

    Text Solution

    |

  7. Light of intensity l is incident perpendicularly on a perfectly reflec...

    Text Solution

    |

  8. The de Broglie wavelength of a thermal neutron at 927^circC is lamda. ...

    Text Solution

    |

  9. A small mirror of mass m is suspended by a light thread of length l. A...

    Text Solution

    |

  10. A particle of mass 3m at rest decays into two particles of masses m an...

    Text Solution

    |

  11. The radius of seocnd orbit of an electron in hydrogen atom is 2.116 eV...

    Text Solution

    |

  12. Radiation of wavelength 546 nm falls on a photo cathode and electrons ...

    Text Solution

    |

  13. The human eye is most sensitive to green light of wavelength 505 nm. E...

    Text Solution

    |

  14. The light sensitive compound on most photographic films is silver brom...

    Text Solution

    |

  15. Photoelectric effect supports quantum nature of light because

    Text Solution

    |

  16. A point source of light is taken away from the experimental setup of p...

    Text Solution

    |

  17. The maximum kinetic energy of the emitted photoelectrons against frequ...

    Text Solution

    |

  18. In a photoelectric experiment, the wavelength of the incident light is...

    Text Solution

    |

  19. When a point light source of power W emitting monochromatic light of w...

    Text Solution

    |

  20. A collimated beam of light of flux density 30kWm^(-2) is incident norm...

    Text Solution

    |