Home
Class 12
PHYSICS
Let p and E denote the linear momentum a...

Let p and E denote the linear momentum and energy of a photon. If the wavelength is decreased,

A

bot p and E increase

B

p increases E decreases

C

p dereases and E increases

D

both p and E decreases

Text Solution

Verified by Experts

The correct Answer is:
A

`p=(h)/(lamda)`
also, `E=(hc)/(lamda)`
So, if `lamda` is decreased, both p and E increase.
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 linear momentum of a 3 MeV photon is

Momentum of a photon of wavelength lambda is :

What is the energy of photon whose wavelength is 6840 Å ?

Calculate the momentum of a photon of light of wavelength 500nm .

The momentum of the photon of wavelength 5000 Å will be

Energy of an emitted photon with wavelength 620 nm is :

If v,p and E denote velocity, lenear momentum and KE of the paritcle respectively, then

Light in certain cases may be considered as a stream of paerticles called photons. Each photon has a linear momentum h/lamda where h is the Planck's constant and lamda is the wavelength lamda is incident on a plane mirror at an angle of incidene theta . Calculate the change in the linear momentum of a photon as the beam is reflected by the mirror.

The momentum (in kg-m//s) of photon having 6 MeV energy is :

CENGAGE PHYSICS ENGLISH-PHOTOELECTRIC EFFECT-Single Correct
  1. In a series of photoelectric emission experiments on a certain metal s...

    Text Solution

    |

  2. A point source causes photoelectric effect from a small metal plate. W...

    Text Solution

    |

  3. Let p and E denote the linear momentum and energy of a photon. If the ...

    Text Solution

    |

  4. Light from a hydrogen tube is incident on the cathode of a photoelectr...

    Text Solution

    |

  5. The photoelectric threshold for some material is 200 nm. The material ...

    Text Solution

    |

  6. The human eye can barely detect a yellow lings (lamda=6000A) that deli...

    Text Solution

    |

  7. X-rays are used to irradiate sodium and copper surfaces in two separat...

    Text Solution

    |

  8. An electron is accelerated through a potential difference of 200 volts...

    Text Solution

    |

  9. A photoelectric cell is connected to a source of variable potential di...

    Text Solution

    |

  10. Photoelectric work function of a metal is 1eV, light of wavelength lam...

    Text Solution

    |

  11. If a surface has a work function 4.0 eV, what is the maximum velocity ...

    Text Solution

    |

  12. An image of the sun is formed by a lens, of the focal length of 30 cm,...

    Text Solution

    |

  13. A 200 W sodium street lamp emits yellow light of wavelength 0.6 mu m. ...

    Text Solution

    |

  14. The work function of a metallic surface is 5.01 eV. The photoelectrons...

    Text Solution

    |

  15. An electron of mass me and a proton of mass mp are accelerated through...

    Text Solution

    |

  16. A material particle with a rest mass mo is moving with a velocity of l...

    Text Solution

    |

  17. If a photocell is illuminated with a radiation of 1240 A, then stoppin...

    Text Solution

    |

  18. Silver has a work function of 4.7 eV. When ultraviolet light of wavele...

    Text Solution

    |

  19. The equation E=pc is valid

    Text Solution

    |

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

    Text Solution

    |