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प्रश्न
What are cathode rays? How are these rays formed?
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.
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संबंधित प्रश्न
What is the absolute mass and charge of an electron?
What is the nature of the charge on Cathode rays .
Name the sub-atomic particle whose charge is -1.
What are valence electrons?
Name or state the following:
A bond formed by transfer of electron(s)
Name or state the following:
Ion formed by the gain of an electron(s)
What is the relation between the number of protons and the number of electrons in an atom?
Differentiate between the following term:
Electron and proton
Which of the following statement is always correct?
An atom has a number of orbits and each orbit has protons.
