Home
Class 12
PHYSICS
If the kinetic energy of the particle is...

If the kinetic energy of the particle is increase to 16 times its previous value, the percentage change in the de Broglie wavelength of the paarticle is

A

25

B

75

C

60

D

50

Text Solution

Verified by Experts

The correct Answer is:
B
`lamda=h/(sqrt(2mE))`
`lamda.=h/(sqrt(2m(16E)))=1/4lamda`
`1/4lamda`
`((lamda-lamda.)/lamda)=(lamda-1/4lamda)/lamda=3/4` % Change in wavelength `3/4xx100%=75%`
Promotional Banner

Topper's Solved these Questions

  • DUAL NATURE OF RADIATION AND MATTER

    MODERN PUBLICATION|Exercise COMPETITION FILE (OBJECTIVE TYPE QUESTIONS ( B - Multiple Choice Questions) (JEE (Main) & Other State Boards for Engineering entrance))|18 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    MODERN PUBLICATION|Exercise COMPETITION FILE (OBJECTIVE TYPE QUESTIONS ( B - Multiple Choice Questions) (JEE (Advanced) for IIT Entrance))|15 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    MODERN PUBLICATION|Exercise COMPETITION FILE (OBJECTIVE TYPE QUESTIONS ( A - Multiple Choice Questions))|15 Videos

  • CURRENT ELECTRICITY

    MODERN PUBLICATION|Exercise Chapter Practice Test|15 Videos

  • ELECTRIC CHARGES AND FIELDS

    MODERN PUBLICATION|Exercise Chapter Practice Test|15 Videos

Similar Questions

Explore conceptually related problems

If the kinetic energy of the particle is increased to 16 times its previous value , the percentage change in the de - Broglie wavelength of the particle is

If the kinetic energy of a particle is increased by 10 times, the percentage change in the de Broglie wavelength of the particle is

The de Broglie wavelength lambda of a particle

The de Broglie wavelength associated with particle is

If the velocity of a particle is increased three times, then the percentage decrease in its de Broglie wavelength will be

If the energy of a particle is reduced to one fourth, then the percentage increase in its de Broglie wavelength will be

The kinetic energy of a particle is equal to the energy of a photon. The particle maves at 5% of the speed of light . The ratio of the photon wavelength to the de Broglie wavelength of the particle is [No nee to use reletivistic formula for particle.]

MODERN PUBLICATION-DUAL NATURE OF RADIATION AND MATTER -COMPETITION FILE (OBJECTIVE TYPE QUESTIONS ( B - Multiple Choice Questions) (AIPMT/NEET & Other State Boards for Medical Entrance))
  1. When light of wavelength 300 nm falls on a photoelectric emitter, phot...

    Text Solution

    |

  2. Maximum velocity of the photoelectron emitted by a metal surface is1.2...

    Text Solution

    |

  3. The ratio of kinetic energy to the total energy of an electron in a Bo...

    Text Solution

    |

  4. A particle of mass 1 mg has the same wavelength as an electron moving ...

    Text Solution

    |

  5. A source S(1) is producing 10^(15) photons/s of wavelength 5000 Å Anot...

    Text Solution

    |

  6. Photoelectric emission occurs only when the incident light has more th...

    Text Solution

    |

  7. In the Davisson and Germer experiment , the velocity of electrons emit...

    Text Solution

    |

  8. Electrons used in an electron microscope are accelerated by a voltage ...

    Text Solution

    |

  9. In photoelectric emission process from a metal of work function 1.8 eV...

    Text Solution

    |

  10. A alpha -parhticle moves in a circular path of radius 0.83 cm in th...

    Text Solution

    |

  11. Monochromatic radiation emitted when electron on hydrogen atom jumps f...

    Text Solution

    |

  12. A modern 200 W sodium street lamp emits yellow light of wavelength 0.6...

    Text Solution

    |

  13. For photoelectric emission from certain metal the cut - off frequency ...

    Text Solution

    |

  14. The wavelength lamda(e) of an electron and lamda(p) of a photon of sam...

    Text Solution

    |

  15. When the energy of the incident radiation is increased by 20 % , kinet...

    Text Solution

    |

  16. If the kinetic energy of the particle is increase to 16 times its prev...

    Text Solution

    |

  17. A certain metallic surface is illuminated with monochromatic light of ...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |