Home
Class 12
PHYSICS
An electron emits energy...

An electron emits energy

A

Because it is in orbit

B

When it escapes from the atom

C

When it falls into the nucleus

D

When it jumps from one energy level to another

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • MODEL TEST PAPER 4

    KCET PREVIOUS YEAR PAPERS|Exercise PHYSICS|60 Videos
  • MODEL TEST PAPER 6

    KCET PREVIOUS YEAR PAPERS|Exercise PHYSICS|60 Videos

Similar Questions

Explore conceptually related problems

A metallic surface when illuminated with light of wavelength 3333 Å emits electrons with energies upto 0.6 eV. Calculate the work function of the metal. Data : lambda=3333 Å , K.E=0.6eV, W=?

Calculate the ionisation energy of hydrogen atom as well as energy needed to promote its electron from first energy level to third energy level

Photons of energy 4 eV are incident on a metal. Maximum velocity of photo electrons emitted is v . When energy of incident radiations is decreased by 50%, velocity is halved, Work function of the metal is

The maximum velocity of the electron emitted from the photosensitive plate is determined by the

The energy of an electron is specified by

What is the significance of negative electronic energy?

KCET PREVIOUS YEAR PAPERS-MODEL TEST PAPER 5-Physics
  1. A particle A has chrage +q and a particle B has charge +4q with each o...

    Text Solution

    |

  2. A solenoid is at potential difference 60 V and current flows through i...

    Text Solution

    |

  3. An electron emits energy

    Text Solution

    |

  4. Two particles X and Y having equal charges, after being acceleration t...

    Text Solution

    |

  5. In an AC circuit, the current is given by i=5sin(100t-(pi)/2) and the ...

    Text Solution

    |

  6. Three bulbs of 40 W, 60 W and 100 W are arranged in series with 220 V....

    Text Solution

    |

  7. Equivalent resistance between A and B in the given circuit will be

    Text Solution

    |

  8. Nuclear forces are

    Text Solution

    |

  9. The first line in the Lyman series has wavelength lambda. The wavelegn...

    Text Solution

    |

  10. 1 g of hydrogen is converted into 0.993 g of helium in a thermonuclear...

    Text Solution

    |

  11. If the kinetic energy of a moving particle is E , then the de-Broglie ...

    Text Solution

    |

  12. The mass number of He is 4 and that for suphur is 32. The radius of su...

    Text Solution

    |

  13. If the binding energy per nucleon in L i^7 and He^4 nuclei are respect...

    Text Solution

    |

  14. What is the threshold wavelength of a metal if the photoelectric work ...

    Text Solution

    |

  15. The same radioactive nucleus may emit

    Text Solution

    |

  16. On increases the reverse biase to a large value of in a PN- junction d...

    Text Solution

    |

  17. In Millikan oil drop experiment, a charged drop of mass 1.8 xx 10^(-14...

    Text Solution

    |

  18. Emission of electrons from a metal surface due to incident radiation i...

    Text Solution

    |

  19. A potential of 1 million volts is applied to an Xray tube. The wavelen...

    Text Solution

    |

  20. An alpha-particle having energy = 10 meV collides with a nucleus of at...

    Text Solution

    |