Home
Class 12
PHYSICS
A proton and an alpha particle are accel...

A proton and an `alpha` particle are accelerated through the same potential difference V. The ratio of their de Broglie wavelengths is

A

`sqrt2`

B

`2sqrt2`

C

`sqrt3`

D

`2sqrt3`

Text Solution

Verified by Experts

The correct Answer is:
B
`lamda=h/sqrt(2mqv)`
`lamda_(p)/lamda_(alpha)=sqrt((m_(alpha)q_(alpha))/(m_(p)q_(p)))=sqrt((4mxx2e)/(mxxe))=sqrt8=2sqrt2`
Promotional Banner

Topper's Solved these Questions

  • II PUC PHYSICS SUPPLEMENTARY EXAM QUESTION PAPER JULY - 2017

    SUNSTAR PUBLICATION|Exercise PART-D ( Vi. Answer any three of the following questions:)|5 Videos

  • K-CET-PHYSICS - 2016

    SUNSTAR PUBLICATION|Exercise MCQs|59 Videos

Similar Questions

Explore conceptually related problems

An alpha -particle and a deutron are accelerated through the same potential difference. The ratio of their de-Broglie wavelengths is

An alpha -particle and a deutron are moving with the same kinetic energy. The ratio of their de Broglie wavelengths is

An alpha -particle and deutron are moving with the same momenta. What will be the ratio of their de Broglie wavelengths ?

A proton is accelerated through a potential difference of 1 V. Its energy is

An electron of mass m , when accelerated through a potential difference V , has de Broglie wavelength lambda . The de Broglie wavelength associated with a proton of mass M , accelerated through the same potential difference, will be

SUNSTAR PUBLICATION-K - CET - PHYSICS - 2018-MCQs
  1. The strength of the Earth's magnetic field is

    Text Solution

    |

  2. A jet plane having a wing - span of 25 m is travelling horizontally to...

    Text Solution

    |

  3. Which of the following represents the variation of inductive reactance...

    Text Solution

    |

  4. The magnetic flux linked with a coil varies as phi=3t^(2)+4t+9. Find t...

    Text Solution

    |

  5. A 100 W bulb is connected to an AC source of 220 V, 50 HZ . Then the c...

    Text Solution

    |

  6. In the series LCR circuit , the power dissipation is through

    Text Solution

    |

  7. In Karnatake , the normal domestic power supply AC is 220 V, 50 Hz . ...

    Text Solution

    |

  8. A step - up transformer operates on a 230 V line and a load current of...

    Text Solution

    |

  9. The number of photons falling per second on a completely darkened plat...

    Text Solution

    |

  10. An objected is placed at the principle focus of a convex mirror. The i...

    Text Solution

    |

  11. An object is placed at a distance of 20 cm from the pole of a concave ...

    Text Solution

    |

  12. A candle placed 25 cm from a lens forms an image on a screen placed 75...

    Text Solution

    |

  13. A plane wavefront of wavelength lamda is incident on a single slit of ...

    Text Solution

    |

  14. How will the diffraction pattern of single slit change when yellow lig...

    Text Solution

    |

  15. In Young's double slit experiment , two wavelengths lamda1 = 780 nm a...

    Text Solution

    |

  16. In Young.s double slit experiment, slits are separated by 2 mm and the...

    Text Solution

    |

  17. The maximum kinetic energy of emitted photoelectrons depends on

    Text Solution

    |

  18. A proton and an alpha particle are accelerated through the same potent...

    Text Solution

    |

  19. The total energy of an electron revolving in the second orbit of hydro...

    Text Solution

    |

  20. The period of revolution of an electron in the ground state of hydroge...

    Text Solution

    |