Home
Class 12
PHYSICS
If K(1) and K(2) are maximum kinetic ene...

If `K_(1) and K_(2)` are maximum kinetic energies of photoelectrons emitted when light of wavelength `lambda_(1) and lambda_(2)` respectively are incident on a metallic surface. If `lambda_(1)=3lambda_(2)` then

A

`K_(1) gt (K_(2)//3)`

B

`K_(1) lt (K_(2)//3)`

C

`K_(1) = 3K_(2)`

D

`K_(2) = 3K_(1)`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • PRACTICE PAPPER

    NCERT FINGERTIPS|Exercise Practice Paper 2|50 Videos
  • PRACTICE PAPPER

    NCERT FINGERTIPS|Exercise Practice Paper 3|50 Videos
  • NUCLEI

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos
  • RAY OPTICS AND OPTICAL INSTRUMENTS

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

Similar Questions

Explore conceptually related problems

If K_(1) and K_(2) are maximum kinetic energies of photoelectrons emitted when light of wavelength lambda_(2) and lambda_(1) respectively are incident on a metallic surface. If lambda_(1)=3lambda_(2) then

Let be the maximum kinetic energy of photoelectrons emitted by light of wavelength lambda_(1) and lambda_(2) correspondingto wavelength lambda_(2) . If lambda_(1) = 2lambda_(2) then:

Let K_(1) be the maximum kinetic energy of photoelectrons emitted by a light of wavelength lambda_(1) and K_(2) corresponding to lambda_( 2). If lambda_(1) = 2lambda_(2) , then

The maximum kinetic energies of photoelectrons emitted from a metal are k_(1) and k_(2) when it is irradiated with light of wavelenght lambda_(1) and lambda_(2) respectively. Find work function of the metal.

A dye absorbs a photon of wavelength lambda and re - emits the same energy into two phorons of wavelengths lambda_(1) and lambda_(2) respectively. The wavelength lambda is related with lambda_(1) and lambda_(2) as :

NCERT FINGERTIPS-PRACTICE PAPPER-Practice Paper 3
  1. If K(1) and K(2) are maximum kinetic energies of photoelectrons emitte...

    Text Solution

    |

  2. When a pentavalent imputrity is added in Ge crystal then, what type of...

    Text Solution

    |

  3. A thin metal plate P is inserted between the plates of a parallel-plat...

    Text Solution

    |

  4. A positively charged thin metal ring of radius R is fixed in the xy pl...

    Text Solution

    |

  5. A voltmeter having a resistance of 1800 Omega employed to measure the ...

    Text Solution

    |

  6. A microammeter has as resistance of 100 Omega and full scale range of ...

    Text Solution

    |

  7. A 100 W bulb B(1) and two 60 W bulbs B(2) and B(3), are connected to a...

    Text Solution

    |

  8. A short conducting rod P of length 3.0 cm is placed parallel to an nea...

    Text Solution

    |

  9. A rectangular loop carrying a current i is situated near a long strai...

    Text Solution

    |

  10. An electron and a proton enter a magnetic field at right angles to the...

    Text Solution

    |

  11. A gang capacitor is formed by interlocking a number of plates as shown...

    Text Solution

    |

  12. A galvanometer of resistance 25Omega is connected to a battery of 2 vo...

    Text Solution

    |

  13. A rectangular coil of 20 turns and area of cross-section 25 cm^(2) has...

    Text Solution

    |

  14. For perfectly coupled coils, the coupling coefficient should be equal ...

    Text Solution

    |

  15. A 200 muF capacitor in series with a 100 Omega resistance is connected...

    Text Solution

    |

  16. The efficiency of a transformer is 90%. The transformer is rated for o...

    Text Solution

    |

  17. In an experiment to find focal length of a concave mirror, a graph is ...

    Text Solution

    |

  18. In a reflecting astronomical telescope, if the objetcive (a spherical ...

    Text Solution

    |

  19. Which one of the following is a possible nuclear reaction ?

    Text Solution

    |

  20. A 5 W source emits monochromatic light of wavelength 5000 Å. When plac...

    Text Solution

    |

  21. Calculate in how many months , (3/4)^(th) of the substance will dacay,...

    Text Solution

    |