Home
Class 12
PHYSICS
The collector plate in an experiment on ...

The collector plate in an experiment on photoelectric effect is kept vertically above the emitter plate . Light source is put on and a saturation photo current is recorded . An electric field is switched on which has a vertically downward direction . Then

A

The photocurrent will increase

B

The kinetic energy of the electrons will increase

C

The stopping potential will decrease

D

The threshold wavelength will increase

Text Solution

Verified by Experts

The correct Answer is:
B
The electrons will get accelerated in the electron. Hence, kinetic energy will increase.
Promotional Banner

Topper's Solved these Questions

  • DUAL NATURE OF RADIATION AND MATTER

    PHYSICS WALLAH|Exercise Neet past 5 years questions|16 Videos

  • CURRENT ELECTRICITY

    PHYSICS WALLAH|Exercise NEET Past 5 Years Questions|23 Videos

  • ELECTRIC CHARGES AND FIELDS

    PHYSICS WALLAH|Exercise NEET PAST 5 YEARS QUESTIONS |7 Videos

Similar Questions

Explore conceptually related problems

The collector plate in an experiment of photoelectric effect is kept vertical above the emitter plate. Light source is put on, and a saturation photocurrent is recorded. An electric field is switched on which has a vertically downward direction-

The anode plate in an experiment on photoelectric effect is kept vertically above the cathode plate. Light source is put on and a saturation photocurrent is recorded. An electric field is switched on which has vertically downward direction

A point source of light is used in an experiment on photoelectric effect . Which of the following curves best represents the variation of photo current (i) with distance (d) of the source from the emitter ?

A point source causes photoelectric effect from a small metal plate. Which of the curves in Fig. may represent the saturation photo-current as a function of the distance between the source and the metal?

A point source causes photoelectric effect from a small metal plate. Which of the following curves may represent the saturation photocurrent as a function of the distance between the source and the metal?

A thin non-conducting ring mass m , radius a , carrying a charge q can rotate freely about its own axis which is vertical. At the initial moment the ring was at rest and no magnetic field was present. At instant t = 0 , a uniform magnetic field is switched on which is vertically downwards and increase with time according to the law B = B_(0)t . Neglecting magnetism induced due to totational motion of the ring. Now answer the following questions. The angular acceleration of the ring and its direction of rotation as seen from above: if E is induced e.m.f

A thin non conducting ring of mass m , radius a carrying a charge q can rotate freely about its own axis which is vertical. At the initial moment, the ring was at rest in horizontal position and no magnetic field was present. At instant t=0 , a uniform magnetic field is switched on which is vertically downward and increases with time according to the law B=B_0t . Neglecting magnetism induced due to rotational motion of ring. The magnitude of an electric field on the circumference of the ring is

A thin non conducting ring of mass m , radius a carrying a charge q can rotate freely about its own axis which is vertical. At the initial moment, the ring was at rest in horizontal position and no magnetic field was present. At instant t=0 , a uniform magnetic field is switched on which is vertically downward and increases with time according to the law B=B_0t . Neglecting magnetism induced due to rotational motion of ring. Find intantaneous power developed by electric force acting on the ring at t=1 s

In an experiment on photoelectric effect, the emitter and the collector plates are placed at a separation of 10cm and are connected through an ammeter without any cell. A magnetic field B exists parallel to the plates. The work function of the emitter is 2.39 e V and the light incident on it has wavelengths between 400nm and 600nm. Find the minimum value of B for which the current registered by the ammeter is zero. Neglect any effect of space charge.

A point charge 'q' is placed at a distance l' (on th y -axis) vertically above the surface which lies in the xz plane as shown in the figure. The flux of electric field passing through the plate is

PHYSICS WALLAH-DUAL NATURE OF RADIATION AND MATTER-Neet past 5 years questions
  1. The collector plate in an experiment on photoelectric effect is kept v...

    Text Solution

    |

  2. Light of frequency 1.5 times the threshold frequency is incident on a ...

    Text Solution

    |

  3. An electron is accelerated from rest through a potential difference of...

    Text Solution

    |

  4. The energy required to break one bond in DNA is 10^(-20)J. This value ...

    Text Solution

    |

  5. The de broglie wavelength of electron moving with kinetic energy of 14...

    Text Solution

    |

  6. Wave nature of electrons was experimentally verified by

    Text Solution

    |

  7. An electron is accelerated through a potential difference of 10,000V. ...

    Text Solution

    |

  8. An electron (mass m) with an initial velocity v=v(0)hat(i)(v(0)gt0) is...

    Text Solution

    |

  9. When the light of frequency 2 v(0) (where v(0) is threshold frequency)...

    Text Solution

    |

  10. The de - Broglie wavelength of a neutron in thermal equilibrium with h...

    Text Solution

    |

  11. The photoelectric threshold wavelength of silver is 3250 xx 10^(-10) m...

    Text Solution

    |

  12. In an experiment of photoelectric effect the stopping potential was me...

    Text Solution

    |

  13. If the mass of neutron = 1.7 xx 10^(-27) kg, then the de-Broglie wavel...

    Text Solution

    |

  14. When a metallic surface is illuminated with radiation of wavelength la...

    Text Solution

    |

  15. When an alpha particle of mass m moving with velocity v bombards on a ...

    Text Solution

    |

  16. An electron of mass m and a photon have same energy E. The ratio of de...

    Text Solution

    |

  17. Photons with energy 5 eV are incident on a cathode C in a photoelectri...

    Text Solution

    |