Home
Class 12
PHYSICS
A Bohr's hydrogen atom undergoes a trans...

A Bohr's hydrogen atom undergoes a transition `n = 5 to n = 4` and emits a photon of frequency `f`. Frequency of circular motion of electron in `n = 4 orbit is f_(4)`. The ratio `f//f_(4)` is found to be `18//5 m`. State the value of `m`.

A

`(18)/(25)`

B

`(16)/(25)`

C

`(9)/(25)`

D

`(8)/(25)`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • NTA JEE MOCK TEST 75

    NTA MOCK TESTS|Exercise PHYSICS|25 Videos

  • NTA JEE MOCK TEST 77

    NTA MOCK TESTS|Exercise PHYSICS|25 Videos

Similar Questions

Explore conceptually related problems

If in hydrogen atom, radius of n^(th) Bohr orbit is r_n ., frequency of revolution of electron in n^(th) orbit is f_n choose the correct option.

When an electron in a hydrogen atom makes a transition from 2^("nd") excited state to ground state. It emits a photon of frequency f.The frequency of photon emitted when an electron of Li^("++") makes a transition from 1^("st") excited state to ground state is :

In hydrogen atom electron jumps from (n+1)th state to nth state the frequency of emitted photon is directly proportional to (n>>1)

If, in a hydrogen atom, radius of nth Bohr orbit is r_(n) frequency of revolution of electron in nth orbit is f_(n) and area enclosed by the nth orbit is A_(n) , then which of the pollowing graphs are correct?

NTA MOCK TESTS-NTA JEE MOCK TEST 76-PHYSICS
  1. A Bohr's hydrogen atom undergoes a transition n = 5 to n = 4 and emits...

    Text Solution

    |

  2. The figure shown below, calculate the net current from the battery and...

    Text Solution

    |

  3. A very long solenoid is made out of a wire with n turns per units leng...

    Text Solution

    |

  4. The moment of inertia of a circular ring of mass 1 kg about an axis pa...

    Text Solution

    |

  5. A rifle with a muzzle velocity of 100m//s shoots a bullet at small tar...

    Text Solution

    |

  6. Two particles having masses m and 4m are separated by distance l. The ...

    Text Solution

    |

  7. Two bodies of masses 1 kg and 4 kg are connected to a vertical spring,...

    Text Solution

    |

  8. One mole of gas having gamma = 7//5 is mixed with 1 mole of a gas havi...

    Text Solution

    |

  9. Two identical glass bulbs are interconnected by a thin glass tube. A g...

    Text Solution

    |

  10. Water is being poured in a vessel at a constant rate alpha m^(2)//s. T...

    Text Solution

    |

  11. A star initially has 10^(40) deuterons. It produces energy via the pr...

    Text Solution

    |

  12. The mass M shown in figure ocillates in simple harmonic motion with am...

    Text Solution

    |

  13. The photosensitive surface is receiving the light of wavelength 5000Å ...

    Text Solution

    |

  14. A cone of radius R and height H, is hanging inside a liquid of density...

    Text Solution

    |

  15. Line PQ is parallel to y - axis and moment of inertia of a rigid body ...

    Text Solution

    |

  16. In the following circuits, PN - junction diodes D(1),D(2) and D(3) are...

    Text Solution

    |

  17. The viscosity eta of a gas depends on the long - range attractive part...

    Text Solution

    |

  18. plane waves refracted for air to water using Huygen.s principal a,b,c,...

    Text Solution

    |

  19. 2 loudspeakers are emitting sound waves of wavelength lambda with an i...

    Text Solution

    |

  20. A block of mass m is connected rigidly with a smooth wedge (plank) by ...

    Text Solution

    |