Home
Class 12
PHYSICS
If U.V. light is incident on any medium ...

If U.V. light is incident on any medium then no photoelectric emission happens. Which will emerge the photoelectrons?

A

I.R

B

X-Ray

C

Microwave

D

Visible light,

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • MODEL PAPER SET-13

    UNITED BOOK HOUSE|Exercise EXERCISE|29 Videos
  • MODEL PAPER SET-15

    UNITED BOOK HOUSE|Exercise EXERCISE|39 Videos

Similar Questions

Explore conceptually related problems

If the stopping potential for photoelectric emission is 0.75 V, the kinetic energy of the fastest photoelectrons is

For a monochromatic light incident on a metal surface, the stopping potential is V. Then the kinetic energy of the fastest photoelectrons emitted from that surface is

The threshold wave length for any metal is 400 nm. If 200 nm of U.V. light is incident on -the object? then what will be the maximum kinetic energy if the electrons [h - 6.63xx10^-34J.S]

If a ray of light is incident on a reflecting medium at the polarising angle, prove that the reflected and the refracted rays are at 90^(@) to each other.

For any metal the photoelectric threshold wavelength is 3800overset@A . An ultraviolet wave of wavelength 2000overset@A is incident on the metal then what will be- the maxinum kinetic energy of the photoelectrons. [given— h = 6.62 xx 10^(-34)J.S]

A beam of photons of energy 5.0 eV is incident on a metal surface, whose work function is 3.0 eV. The metal remains isolated and the photoelectrons are being removed instantaneously after their emission. Although photoelectric emission akes places initially, but after some times it ceases. Explain it with reasons.

A ray of light incident on a medium at polarising angle.what will be the angle between the reflected and the refracted rays? Or, an unpolarised ray of light is incident on a rectangular glass block at Brewster's angle. What will be the angle between the reflected and the refracted rays?

What is meant by stopping potential in photoelectric emission? Does the stppping potential depend on the intensity and the frequency of the incident light? Explain.

What is meant by stopping potential in photoelectric emission ? Does the stopping potential depend on (i) the intensity and (ii) the frequency of the incident light ? Explain

For a monochromatic light incident on a metal surface, the maximum velocity of the emitted photoelectrons is v. Then the stopping potential would be

UNITED BOOK HOUSE-MODEL PAPER SET-14-EXERCISE
  1. For which electromagnetic wave the range of wavelength is 10^(-10) m

    Text Solution

    |

  2. The relation between angle of the prism and refractive index of the me...

    Text Solution

    |

  3. If U.V. light is incident on any medium then no photoelectric emissio...

    Text Solution

    |

  4. The ground state energy of H1^1,atom is -13.6eV. What is the energy fo...

    Text Solution

    |

  5. The range of suitable radio wave frequency for transmitting sky wave i...

    Text Solution

    |

  6. What will happen to the energy of light when it travels from rarer to ...

    Text Solution

    |

  7. If p type and n type crystals are touched with each other can p-n junc...

    Text Solution

    |

  8. Why do we prefer a potentiometer with longer wire?

    Text Solution

    |

  9. An electron is rotating with constant speed of 6 xx 10^7 m//s in a con...

    Text Solution

    |

  10. In a metal maximum magnetic permittivity is0.126 Tm//A, What will be ...

    Text Solution

    |

  11. Why any object get heated easily in microwave if it has moisture in it...

    Text Solution

    |

  12. The electron in a hydrogen atom is in n=2 state. When it drops to the ...

    Text Solution

    |

  13. Write down two importances of modulation for signal transferring

    Text Solution

    |

  14. What type,of wave is used for LOS [Line of Sight Model]? What is the r...

    Text Solution

    |

  15. A parallel plate capacitorjs charged by a battery and then the battery...

    Text Solution

    |

  16. A 600pF Capacitor is connected with a 200V battery .After removing th...

    Text Solution

    |

  17. Obtain for the magnetic induction, vector at a point on the axis of a ...

    Text Solution

    |

  18. State the Einstein photoelectric equation.

    Text Solution

    |

  19. The de Broglie wavelength of a proton and an electron are same, then w...

    Text Solution

    |

  20. A photon and a proton have the same de – Broglie wavelength λ.Show tha...

    Text Solution

    |