Explain the properties of cathode rays.

Explain the properties of cathode rays.
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1 Answer

Answer :

Ans : Properties of Cathode Rays :
(1) Path :
They cast shadow of objects placed in their path towards the anode proving that they travel in straight lines.
(2) Material Particles :
They cause a light paddle wheel to rotate (revolve) showing that they are material particles.
(3) Glow :
These rays although invisible cause some material to glow.
(4) Deflection :
They are deflected towards the positive plate in an electric field showing that they are negatively charged particles.
(5) Charge to Mass Ratio :
The charge / mass (e/m) ratio of cathode particles is 1.75 x 108 c/g. it is same for all electrons regardless of any gas in the tube.
(6) Kinetic Energy :
They produce mechanical pressure indicating they possess kinetic energy.
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