Why charge and mass of anode rays particle depends on nature of gas taken in the discharge tube ?
Answers
Answer:
Charge to mass ratio of the particles in the anode rays depends upon nature of the gas taken in the discharged tube. ... in case of cathode rays which is made of electron e/m ratio is same because it is made of electron.
Answer:
E. Goldstein, a German scientist, in 1886 , discovered the existence of a new type of rays in the discharge tube. He used a perforated cathode in the discharge tube.
The cathode divided the discharge tube in two chambers. On passing the electric discharge at low pressure he observed a new type of rays streaming behind the cathode.
The path of these rays became visible due to the glow of the residual gas. These rays also produced fluorescent glow on striking the walls of the tube behind cathode. These rays were named anode rays or canal rays. These rays were named canal rays because they passed through ‘holes’ or ‘canals’ in the cathode.
The charge to mass ratio of the particles in the anode rays was determined by W. Wien by using Thomson’s technique. Charge to mass ratio of the particles in the anode rays depends upon nature of the gas taken in the discharged tube.
Anode rays are because of nucleus containing protons and neutrons and different atoms have different ratio of protons to neutrons so e/m ratio differs(since mass is also affected by neutrons)therefore anode rays depend on the nature of electrode and gas present in it. in case of cathode rays which is made of electron e/m ratio is same because it is made of electron.
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