Home
Class 12
PHYSICS
When green light is incident on a certai...

When green light is incident on a certain metal surface electrons are emitted but no electrons are emitted with yellow light. IF red light is incident on the same metal surface-

A

more energetic electrons will be emitted

B

less energetic electons will be emitted

C

emission of electrons will depend on the intensity of light

D

no electrons will be emitted.

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • QUESTION PAPER 2016

    UNITED BOOK HOUSE|Exercise EXERCISE|49 Videos
  • QUESTION PAPER 2018

    UNITED BOOK HOUSE|Exercise EXAMPLE|75 Videos

Similar Questions

Explore conceptually related problems

When the frequency of light incident on a metallic plate is doubled the KE of the emitted photoelectron will be

When a ray of light is incident on a plane normally, then what is the value of angle of refractive?

The stopping potential for photoelectrons from a metal surface is V_(1) when monochromatic light of frequency v_(1) is incident on it. The stopping potential becomes V_(2) when monochromatic light of another frequency is incident on the same metal surface. If h be the Planck's constant and e be the charge of an electron, then the frequency of light in the second case is

A ray of light of frequency 5000 Å is incident on a metal surface and thus, absorbs 10^(-7)J of energy. Calculate the number of photons incident on the metal surface.

thresold Wavelength of incident light on a metal surface is 404 Å . Determine the work function.

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

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

If the intensity of incident radiation on a metal surface is doubled, what happens to the kinetic energy of the electrons emitted?

When light incident on a metal has energy less than the work function of the metal, then no electron is emiited from the surface of the metal. Mathematically justify this statement.

A ray of light is incident on a reflecting surface making an angle 50^(@) with the surface. Due to reflection, the angle of deviation is

UNITED BOOK HOUSE-QUESTION PAPER 2017-EXERCISE
  1. For a transistor if beta =100, the alpha will be-

    Text Solution

    |

  2. A radioactive element emits 2 alpha-particles and 3 beta-particles . T...

    Text Solution

    |

  3. When green light is incident on a certain metal surface electrons are ...

    Text Solution

    |

  4. A paralles beam of white light falls on one face of a prism. The light...

    Text Solution

    |

  5. A luminous object is separated from a screen by a distance D. What is ...

    Text Solution

    |

  6. Electro magnetic wave does not carry-

    Text Solution

    |

  7. If L and R denote inductance and resistance respectively, then the dim...

    Text Solution

    |

  8. A proton with a speed of 2xx10^7 m.s-1 enters a magnetic field of flux...

    Text Solution

    |

  9. A straight conductor of length l m carrying a current 1A is bent in th...

    Text Solution

    |

  10. Mutual inductance of two coils can be increased by

    Text Solution

    |

  11. Two capacitors of capacitances C1" and "C2, are connected in parallel....

    Text Solution

    |

  12. The number of electrons in 2 coulomb of charge is-

    Text Solution

    |

  13. Write down the values of (barX+X) and (X.barX) in Boolean algebra.

    Text Solution

    |

  14. The cirtical angle of a transparent crystal for green light is 30^(@)....

    Text Solution

    |

  15. What will be the change in focal length f of a concave mirror when imm...

    Text Solution

    |

  16. State one difference between a dynamo and a motor.

    Text Solution

    |

  17. On what physical quantity does the magnetic moment of an electron revo...

    Text Solution

    |

  18. Is Burlow's wheel a motor? Give reason.

    Text Solution

    |

  19. Very high or very low resistance cannot be measured correctly by using...

    Text Solution

    |

  20. Define the corrent sensitivity and voltage sensitivity of a moving coi...

    Text Solution

    |