Home
Class 12
PHYSICS
A photo cell is receiving light from a s...

A photo cell is receiving light from a source placed at a distance of `1 m`. If the same source is to be placed at a distance of `2 m` , then the ejected electron

A

Remain same

B

Four times

C

Two times

D

One-fourth

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • NEET

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise PHYSICS|157 Videos
  • NEET

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise QUESTION|95 Videos
  • MOTION IN TWO AND THREE DIMENSION

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise All Questions|47 Videos
  • NEET 2020

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise All Questions|45 Videos

Similar Questions

Explore conceptually related problems

When a point source of light is at a distance of 50 cm from a photoelectric cell , the cut-off voltage is found to be V_(0) . If the same source is placed at a distance of 1 m from the cell , then the cut-off voltage will be

A photocell with a constannt potential differnce of V voolt across it, is illuminated by a point source from a distance of 25 cm. when the source is moved to a distance of 1 m, the electrons emitted by the photocell

When a point source of light is at a distance of one metre from a photo cell , the cut off voltage is found to be V . If the same source is placed at 2 m distance from photo cell , the cut off voltage will be

A photo cell is illuminated by a small bright source placed 1m away When the same source of light is placed 2m away, the electrons emitted by photo cathode

A photo-cell is illuminated by a source of light which is placed at a distance d from the cell . If the distance become d/2 . Then number of electrons emitted per seconed will be

When a point source of light is at a distnace of 1 m from a photo cell, the cut off voltage is is found to be V. if the same source is placed at 3m distance from photo cell, the cut of voltage will be

The distance between two coherent sources is 1 mm. The screen is placed at a distance of 1 m from the sources. If the distance of the third bright fringe is 1.2 mm from the central fringe, the wavelength of light used is

When a monochromatic source of light is at a distance of 0.2 m from a photocell, the stopping potential (cut off voltage) and the saturation current are found to be respectively 1 V and 27 mA. If the same source is placed at a distance 0.6 m from the cell, then

NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-NEET-MCQ
  1. A photo cell is receiving light from a source placed at a distance of ...

    Text Solution

    |

  2. The damping force on an oscillator is directly proportional to the vel...

    Text Solution

    |

  3. The motion of a particle along a straight line is described by equatio...

    Text Solution

    |

  4. The horizontal range and the maximum height of a projectile are equal....

    Text Solution

    |

  5. A particle has initial velocity (2 vec(i)+3 vec(j)) and acceleration (...

    Text Solution

    |

  6. A car of mass 1000kg negotiates a banked curve of radius 90m on a fict...

    Text Solution

    |

  7. A solid cylinder of mass 3 kg is rolling on a horizontal surface with ...

    Text Solution

    |

  8. The potential energy of a particle in a force field is: U = (A)/(r^(...

    Text Solution

    |

  9. Two sphere A and B of masses m(1) and m(2) respectivelly colides. A is...

    Text Solution

    |

  10. Two persons of masses 55 kg and 65 kg respectively are at the opposite...

    Text Solution

    |

  11. ABC is an equilateral triangle with O as its centre vec(F(1)),vec(F(2)...

    Text Solution

    |

  12. When a mass is rotating in a plane about a fixed point, its angular mo...

    Text Solution

    |

  13. A spherical planet far out in space has a mass M(0) and diameter D(0)....

    Text Solution

    |

  14. A geostationary satellite is orbiting the earth at a height of 5R abov...

    Text Solution

    |

  15. The height a which the weight of a body becomes 1//16th its weight on ...

    Text Solution

    |

  16. Two sources of sound placed close to each other are wmitting progressi...

    Text Solution

    |

  17. When a string is divided into three segments of length l1,l2 and l3 th...

    Text Solution

    |

  18. One mole of an ideal gas goes from an initial state A to final state B...

    Text Solution

    |

  19. A thermodynamics system is taken trough the cycle ABCD as shown in fig...

    Text Solution

    |

  20. Liquid oxygen at 50 K is heated to 300 K at constant pressure of 1 atm...

    Text Solution

    |

  21. If the radius of a star is R and it acts as a black body, what would b...

    Text Solution

    |