Home
Class 12
PHYSICS
Radiation of wavelength lamda is inciden...

Radiation of wavelength `lamda` is incident on a photocell. The fastest emitted electron has speed v. If the wavelength is charged to `(3lamda)/(4)`, the speed of the fastest emitted electron will be

A

`=v(4/3)^(1/2)`

B

`=v(3/4)^(1/2)`

C

`gtv(4/3)^(1/2)`

D

`ltv(4/3)^(1/2)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • NTA JEE MOCK TEST 25

    NTA MOCK TESTS|Exercise PHYSICS|25 Videos
  • NTA JEE MOCK TEST 28

    NTA MOCK TESTS|Exercise PHYSICS|25 Videos

Similar Questions

Explore conceptually related problems

In a photomissive cell with executing wavelength lamda//2 , work function phi , the fastest moving electron has acquired speed as v. If the executing wavelength is changed to (5lamda)/4 , the speed of the fastest emitted electron will be

In a photoelectric experiment, with light of wavelength lambda , the fastest election has speed v. If the exciting wavelength is changed to (3lambda)/4 , the speed of the fastest emitted electron will become

In a photoelectric experiment, with light of wavelength lamda , the fastest electron has speed v. If the exciting wavelength is changed to 5lamda/4 , the speed of the fastest emitted electron will become

In a photoemissive cell, with exciting wavelength lambda , the faster electron has speed v. If the exciting wavelength is changed to 3lambda//4 , the speed of the fastest electron will be

In a photo-emissive cell, with exciting wavelength lambda , the maximum kinetic energy of electron is K. If the exciting wavelength is changed to ( 3 lambda)/( 4) the kinetic energy of the fastest emitted electron will be :

Light of wavelength 500 nm is incident on a metal with work function 2.28 eV . The de Broglie wavelength of the emitted electron is

A photon of wavelength lamda is scattered from an electron, which was at rest. The wavelength shift Delta lamda is three times of lamda and the angle of scattering theta is 60^@ . The angle at which the electron recoiled is phi . The value of tan phi is: (electron speed is much smaller than the speed of light)

A photoelectric material having work-function phi_(0) is illuminated with light of wavelength lamda(lamdalt(hc)/(4_(0))). The fastest photoelectron has a de Broglie wavelength lamda_(d). A change in wavelength of the incident light by Deltalamda results in a change Deltalamda_(d) in lamda_(d). Then the ration Deltalamda_(d)//Deltalamda is proportional to

NTA MOCK TESTS-NTA JEE MOCK TEST 27-PHYSICS
  1. Two spherical conductors A and B of radii R and 2R respectively , are ...

    Text Solution

    |

  2. The figure shows a current - carrying square loop ABCD of side 10 cm a...

    Text Solution

    |

  3. A block of mass 5 kg is placed on a rough inclined plane. The inclinat...

    Text Solution

    |

  4. A block of mass m & charge q is released on a long smooth inclined pla...

    Text Solution

    |

  5. A cylindrical adiabatic container of total volume 2V(0) divided into t...

    Text Solution

    |

  6. The pressure at the bottom of an open tank of water is 3p where p is t...

    Text Solution

    |

  7. The elastic limit of brass is 379 MPa . What should be the minimum dia...

    Text Solution

    |

  8. A disc of radius R rolls without slipping at speed v along positive x-...

    Text Solution

    |

  9. A vernier callipers has 20 divisions on the vernier scale which coinci...

    Text Solution

    |

  10. Radiation of wavelength lamda is incident on a photocell. The fastest ...

    Text Solution

    |

  11. In the figure shown , RB=500kOmega, RC = 8 kOmega, V("BB")=10.6V and V...

    Text Solution

    |

  12. The figure shows a fixed inclined plane on which a plank is being pull...

    Text Solution

    |

  13. A thin prism of angle 5^(@)is placed at a distance of10cm from object....

    Text Solution

    |

  14. A micture of light, consisting of wavelength 590nm and an unknown wave...

    Text Solution

    |

  15. A particle is released from a height S. At certain height its kinetic ...

    Text Solution

    |

  16. Total number of elements which are present in a row on the periodic ta...

    Text Solution

    |

  17. A diamtomic molecule can be modelled as two rigid balls connected with...

    Text Solution

    |

  18. A body of mass 3 kg collides elastically with another body at rest and...

    Text Solution

    |

  19. A man in a balloon throws a stone downwards with a speed of 5 m//s wi...

    Text Solution

    |

  20. A block of mass 1 kg is connected with a smooth plank of the same mass...

    Text Solution

    |