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Cathode rays are a stream of electrons originating from cathode and moving to an anode, when high voltage electric potential is applied to the electrodes sealed in a glass tube containing gas at low pressure.
Cathode rays are stream of negativley charged electrons getting detached right from neutral molecues due to high voltage and driven right from cathode to anode.
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Vivi· Travel in straight lines: They cast a shadow of the objects placed in their way.
· Produce mechanical effect: A paddle wheel placed in their path starts rotating.
· Rays are positively charged: Anode rays are deflected towards the negative plate of an electric field.
· The nature of the anode rays depends upon the gas taken in the discharge tube. Different gases give different types of positive rays, which contain particles having different masses and different charges. Therefore the (e/m) ratio is not constant for positive ray particles obtained from different gases.
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Which scientist discovered that cathode rays are made up of negatively charged particles?
J.J. Thomson discovered that cathode rays are made up of negatively charged particles. He conducted experiments using cathode ray tubes and found that the rays were deflected by electric and magnetic fields in a manner consistent with the presence of negatively charged particles.
Is cathode rays are material particles?
Cathode rays are streams of electrons that travel from the negatively charged cathode to the positively charged anode in a cathode ray tube. They are not material particles in the traditional sense because they do not have mass or volume, but rather behave as electron beams.
Why do cathode rays produce sharp shadow of object placed in their path?
Cathode rays produce a sharp shadow of an object because they travel in straight lines and can only pass through openings in obstacles. When an object is placed in the path of cathode rays, the rays are blocked by the object, creating a distinct shadow where the rays are unable to pass through. This phenomenon is due to the wave-particle duality of cathode rays.
Are cathode rays deflected toward a negatively charged plate in an electric field?
Yes, cathode rays are deflected towards a positively charged plate in an electric field. The negatively charged particles in the cathode rays are attracted to the positive plate, causing the deflection.
Why anode rays also known as canal rays?
Anode rays are also known as canal rays because they were discovered to be positively charged particles produced in a cathode tube when the cathode rays strike a gas at low pressure. The particles travel in the opposite direction of cathode rays and move towards the anode or positive electrode, hence the name "anode rays."
