Atomic Structure
From the discharge tube experiment, it was concluded that :
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Subjective Type
How are cathode rays originated ?
Solution
Cathode rays are named so because they are emitted by a negative electrode (cathode), in a vacuum tube, also called the cathode ray tube.
Cathode rays are just a beam of electrons observed in a vacuum tube. When the discharge tube or evacuated glass tube is facilitated with $$2$$ electrodes and a high voltage, then due to the emission of electrons traveling perpendicular to the cathode, the glass kept opposite to the negative electrode (i.e., cathode) is observed to glow.
High electric potential is applied between anode and cathode to ionize the residual gas in the tube. The ions are accelerated by an electric field and collide with the cathode, which releases electrons. As electrons are negatively charged, they are repelled by the cathode and are attracted by the anode.
SIMILAR QUESTIONS
Atomic Structure
Which has maximum spin?
Atomic Structure
Fill in the blanks: Cathode rays produce _________ rays when strike against the surface of a hard metal like tungsten.
Atomic Structure
Which of the following are true for cathode rays?
Atomic Structure
Which of the following statements is not correct about the characteristics of cathode rays?
Atomic Structure
Tick the appropriate answer. $$\beta$$-particles are actually a stream of
Atomic Structure
Cathode rays are a stream of fast moving particles that travel in random directions.
Atomic Structure
How are cathode rays produced ? Briefly explain their important properties.
Atomic Structure
Fill in the blanks: Cathode rays produce _________ rays when strike against the surface of a hard metal like tungsten.
Atomic Structure
Fill in the blanks: Cathode rays produce ________ on striking ZnS screen.
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