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 about Bessemer?
Why ate the telegraph wires kept a little loose ?
Explain the Welding ?
A coil of wire that produces a magnetic field is typically called ?
Why is it that the nearer we approach the sun, the colder it becomes ?
which type of component is transformer
Does sunlight reflected off a mirror increase the temperature of the sun-rays?
Define Nucleus?
whether man or women came first on earth
If a dog rolled around on a carpet and gets statically and a flea jumps on it will the flea get electrocuted?
Explain planck’s hypothesis? : quantum physics
Explain planck’s hypothesis or what the postulates of planck’s quantum theory? (Or) what are the assumptions of quantum theory of black body radiation? : quantum physics