Advertisements
Advertisements
प्रश्न
What do you mean by electron emission?
Advertisements
उत्तर
Free electrons leave the metal surface only if sufficient energy is supplied to the metal. This emission of electrons from metal surface is called the electron emission.
संबंधित प्रश्न
Answer the following questions based on a hot cathode ray tube
Name the charged particles
State the energy conversion taking place in a cathode ray tube
What is meant by radioactivity?
State the penetrating range of α, β and γ radiations.
What happens to the position of an element in the periodic table when it emits an alpha particle
Why should a radioactive substance not be touched by hands?
What are cathode rays? Why are they called ‘cathode rays’? Name a material which exhibits fluorescence when cathode rays fall on it.
Name the Different Radiations Which Are Emitted by the Radioactive Substances.
Are all the radiations mentioned by you, emitted in a single radioactive decay?
The half-life of a radioactive nuclide is 100 hours. The fraction of original activity that will remain after 150 hours would be ______.
