Advertisements
Advertisements
प्रश्न
What are cathode rays? How are these rays formed?
Advertisements
उत्तर
Cathode rays are the beam of electrons which travel from the negatively charged end (i.e. cathode to anode) of a vacuum tube, across a voltage difference between the electrodes placed at each end.
Formation of cathode rays:
Generally gases are poor conductors of electricity. However, when a high voltage charge from an induction coil is applied to tubes filled with gases at very low pressure (0.01 mm of mercury), the gases become good conductors of electricity and begin to flow in the form of rays.
These rays are called cathode rays and they travel from the cathode towards the anode.
APPEARS IN
संबंधित प्रश्न
What are valence electrons?
Choose the correct option:
The mass number of an atom whose unipositive ion has 10 electrons and 12 neutrons is :
If electrons are getting added to en element Y; then
What charge will Y migrate to during the process of electrolysis?
Explain the following:
Atoms combine by transfer and sharing of an electron(s).
An element X has 2 electrons in its M shell, it forms a bond with an element Y which has 7 electrons in its third orbit.
- Write the formula of the compound formed.
- Which nearest inert gas electronic configuration will element X and Y acquire.
- Show by orbital diagram the formation of the compound between X and Y.
Differentiate between the following term:
Electron and proton
The number of electrons in an element X is 15 and the number of neutrons is 16. Which of the following is the correct representation of the element?
In a television tube, Cathode rays are deflected by magnetic fields.
When an atom gains an electron it has more electrons and thus it carries a positive charge.
Select the INCORRECT statement.
