Home
Class 12
PHYSICS
If a hydrogen atom at rest, emits a phot...

If a hydrogen atom at rest, emits a photon of wavelength `lambda`, the recoil speed of the atom of mass m is given by :

A

`(h)/(lambda)`

B

`(mh)/(lambda`

C

`mhlambda`

D

`(hlambda)/(m)`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • MODERN PHYSICS

    DC PANDEY|Exercise for JEE Advanced (only one option is Correct)|77 Videos

  • MODERN PHYSICS

    DC PANDEY|Exercise for JEE Advanced (More than One Options is Correct )|1 Videos

  • MAGNETISM AND MATTER

    DC PANDEY|Exercise Medical gallery|1 Videos

  • MODERN PHYSICS - 1

    DC PANDEY|Exercise Level 2 Subjective|23 Videos

Similar Questions

Explore conceptually related problems

The rest mass of a photon of wavelength lambda is

The mass of photon of wavelength lambda is given by

When a hydrogen atom emits a photon in going from n=5 to n=1, its recoil speed is almost

An excited hydrogen atom emits a photon of wavelength lambda in returning to the ground state. If 'R' is the Rydberg's constant, then the quantum number 'n' of the excited state is:

Whenever a hydrogen atom emits a photon in the Balmer series

A free hydrogen atom after absorbing a photon of wavelength lambda_(a) gets excited from state n = 1 to n = 4. Immediately after electron jumps to n = m state by emitting a photon of wavelength lambda_(e ) . Let change in momentum of atom due to the absorption and the emission are Delta P_(a) and Delta P_(e) respectively. If lambda_(a)//lambda_(e )= 1//5 . Which of the following is correct

DC PANDEY-MODERN PHYSICS-Integer Type Questions
  1. If a hydrogen atom at rest, emits a photon of wavelength lambda, the r...

    Text Solution

    |

  2. The ratio between acceleration of the electron in singley ionized heli...

    Text Solution

    |

  3. If the radius of firs Bohr's orbit is x, then de-Broglie wavelenght of...

    Text Solution

    |

  4. A H-atom moving with speed v makes a head on collisioon with a H-atom ...

    Text Solution

    |

  5. The magnetic fieold at the centre of a hydrogen atom due to the motion...

    Text Solution

    |

  6. when the voltage applied to an X-ray tube increases from V(1) = 10 kV ...

    Text Solution

    |

  7. Light of wavelength 330nm falling on a piece of metal ejects electrons...

    Text Solution

    |

  8. Light of wavelength 0.6mum from a sodium lamp falls on a photocell and...

    Text Solution

    |

  9. An alpha-particle accelerated through V volt is fired towards a nucleu...

    Text Solution

    |

  10. The kinetic energies of the photoelectrons ejected from a metal surfac...

    Text Solution

    |

  11. In a hydrogen atom following the Bohr's psotulates the product of line...

    Text Solution

    |

  12. A target element A is bombarded with electrons and the wavelengths of ...

    Text Solution

    |

  13. A moving hydrogen atom makes a head on collision with a stationary hy...

    Text Solution

    |

  14. A radioactive sample contains two different types of radioactive nucle...

    Text Solution

    |

  15. A overset(lambda)rarr B overset(2 lambda)rarr C T=0 ,N(0) , 0 , T...

    Text Solution

    |

  16. In a photeclectric experiment , when electromegnetic wave given by E=E...

    Text Solution

    |

  17. Nuclei X and Y convert into a stable nucleus Z. At t=0 , the number o...

    Text Solution

    |

  18. Single electron is orbiting in n^(th)orbit of hydrogen atom. The magne...

    Text Solution

    |