How we are getting light from electrical bulb.Please brief
in detail.
Answer / muhammad zahid
shortly by thermionic emission the light bulb contains a
filament. this filament has a cathode and an anode. when we
switch on the bulb.then the cathode of the filament becomes
hot. due to this thermal electrons are ejected from the
cathode and move towards anode.on the path of electrons,
they make an elastic collision with the gas molecules
within the tube or filament. so the atoms of the gas are
raised to higher energy states. when these atoms dexcite
then light is emitted as predicted by Bohr theory
Is This Answer Correct ? | 4 Yes | 0 No |
Explain the applications of nmr spectroscopy?
By primarily using what simple machine did galileo come to the conclusion on the existence of friction?
what is the importance of frequency?
What is pascal s principle?
How does laser printer works?
What is Relative humidity ?
For two objects separated by a distance d, if the mass of one of the objects is doubled, what will happen to the gravitational attraction between them?
Sir. I m a physics graduate ...how can i help in bank with my physics subject...kindly reply ...my id. Pshkumar.090@gmail.com...please
Explain the difference between photodiode & photocell?
If a body is hung from a spring balance first at the poles and then at the Equator, why do the readings of the balance change ?
What is Shortsightedness or Shortsightedness ?
What is amplitude?