Advertisements
Advertisements
Advertisements
उत्तर
Cathode rays are used for:
(i) Converting electrical signal into a visual signal, (ii) In television.
संबंधित प्रश्न
State the energy conversion taking place in a cathode ray tube
What happens if the negative potential is changed on a grid?
Name the unit in which the work function of a metal is expressed.
A nucleus `""_11^24Na` emits a beta particle to change into Magnesium (Mg)
(i) Write the symbolic equation for the process.
(ii) What are numbers 24 and 11 called?
(iii) What is the general name of `""_12^24Mg `with respect to `""_11^24Na` ?
A radioactive nuclide `""_86^226` Ra decays by emission of two alpha particles, one beta particle and gamma rays. Which of the following is the resulting nuclide X?
State two properties that a substance should possess when used as a thermionic emitter.
What are ‘Becquerel rays’?
An electrons emitter must have how much work function and melting point.
