Home
Class 12
PHYSICS
When point source is kept at 20 cm dista...

When point source is kept at 20 cm distance from photcell ,stopping voltage obtained is `V_(0)` When source distance is changed to 1m, stopping potential will be ……..

A

`(V_(0))/(u)`

B

`(V_(0))/(2)`

C

`V_(0)`

D

`2V_(0)`

Text Solution

Verified by Experts

The correct Answer is:
C

Value of stopping potential depend on frequency .It does not depend on distance from source .
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

When monochromatic source is kept at distance of 0.2 m from photocell,cutoff voltage obtained is 0.6 V and saturation current is 18 mA.Noe if source is kept at distance of 0.6 m…….

Photocell is kept at distance of 1 m from the source and incident radiation .Now distance from source is changed to 2m,then….

A photocell is placed at 1 m distance from light source when distance is changed to (1)/(2) m no.of photoelectron emitted from cathode will come

When a monochromatic point source of light is at a distance of 0.2 m from a photoelectric cell, the cut off voltage and the saturation current are respectively 0.6 V and 18.0 mA. If the same source is placed 0.6 m away from the photoelectric cell, then (a) the stopping potential will be 0.2 V (b) the stopping potential will be 0.6 V (c ) the saturation current will be 6.0 mA (d) the saturation current will be 2.0 mA

When monochromatic light of frequency f_(1) incident on photosensitive surface ,stopping potential obtained is V_(1) .When same surface is incident with monochromatic light of frequency f_(2) is incident on same surface ,stopping potential will become......

Two coherent point sources S_1 and S_2 are separated by a small distance d as shown. The fringes obtained on the screen will be

When a metallic surface is illuminated by a monochromatic light of lamda the stopping potential for photoelectric current is 4V_(0) when the same surface is illuminated by light of wavelength 3 lamda the stopping potential is V_(0) The threshold wavelength for this surface for photoelectric effect is -

A light source emit monochromatic light of 5000 Å wavelength and produce 5 W power .When it is displaced by 0.5 m from photo sensitive surface photoelectron are emitted,when distance increased by 0.5, no.of photoelectron liberated will become ……

Electric potential at 5 can distance from centre of shell of 14 cm radius is 10 V, then potentiaJ at IO cm djstance from centre will be ...... .

Statement - 1 : When ultraviolet light is incident on a photocell , its stopping potential is V_(0) and the maximum kinetic energy of the photoelectrons is K_(max) when the ultraviolet light is replaces by X- rays both V_(0) and K_(max) increase Statement - 2 : Photoelectrons are emitted with speeds ranging from zero to a maximum value became of the range of frequencies present in the incident light

KUMAR PRAKASHAN-DUAL NATURE OF RADIATION AND MATTER-Section-D (MCQs asked in AIIMS)
  1. When monochromatic light of frequency f(1) incident on photosensitive ...

    Text Solution

    |

  2. For given metal work function is W(0) and threshold wavelength is lamb...

    Text Solution

    |

  3. When point source is kept at 20 cm distance from photcell ,stopping vo...

    Text Solution

    |

  4. Wavelength of matter particle is independent of which of the quantitie...

    Text Solution

    |

  5. No .of photon emitted eery second from 60 W bulb will be ………

    Text Solution

    |

  6. A photon having 8 eV energy is incident on metal suraface with thresho...

    Text Solution

    |

  7. Ultraviolet light of 200 nm wavelength is incident on polished surface...

    Text Solution

    |

  8. alpha-particle and deuteron moves with speed v and 2v respectively .Wh...

    Text Solution

    |

  9. If linear momentum of a particle is 2.2xx10^(4) kgms^(-1) then what wi...

    Text Solution

    |

  10. In photoelectric effect threshold wavelength of sodium is 5000Å .Find ...

    Text Solution

    |

  11. Photoelectric effect represent that ………..

    Text Solution

    |

  12. Frequency of photon having 100 eV energy is ……Hz [h=6.62xx10^(-34)Js,1...

    Text Solution

    |

  13. An electron and proton move in same direction with equal kinetic energ...

    Text Solution

    |

  14. Work function of photosensitive surface is phi .When photon of 3phi en...

    Text Solution

    |

  15. If particle mentioned below moves with same velocity which will have h...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |