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Questions and Answers
What is the name of the scientist who is primarily credited with experimenting on cathode rays?
What is the name of the scientist who is primarily credited with experimenting on cathode rays?
- Tesla
- Faraday (correct)
- Einstein
- Newton
From what part of the cathode ray tube do the cathode rays originate?
From what part of the cathode ray tube do the cathode rays originate?
- Both Anode and Cathode
- The middle of the tube
- Cathode (correct)
- Anode
How are cathode rays made visible to the human eye?
How are cathode rays made visible to the human eye?
- They are made visible using a powerful magnifying glass
- Using a special coating that glows when hit by cathode rays. (correct)
- They are made visible using a sensitive camera
- They are inherently visible to the naked eye.
What happens to the direction cathode rays travel in the absence of an external electric or magnetic field?
What happens to the direction cathode rays travel in the absence of an external electric or magnetic field?
Which of these factors DO NOT influence the characteristics of cathode rays?
Which of these factors DO NOT influence the characteristics of cathode rays?
Flashcards
Cathode Ray
Cathode Ray
A stream of negatively charged particles originating from the cathode in a vacuum tube.
Anode and Cathode
Anode and Cathode
Anode is the positive electrode, while cathode is the negative electrode in a circuit.
Behavior of Cathode Rays
Behavior of Cathode Rays
Cathode rays travel in straight lines and are not affected by electric or magnetic fields.
Fluorescence and Phosphorescence
Fluorescence and Phosphorescence
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Independence of Material
Independence of Material
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Study Notes
Cathode Ray Experiments (1850s)
- Scientists like Faraday conducted experiments, which revealed the existence of negatively charged particles.
- Cathode rays originate from the cathode (negative electrode).
- Cathode rays can be observed using fluorescent or phosphorescent materials that glow when struck.
- In the absence of electric or magnetic fields, cathode rays travel in straight lines.
- The characteristics of cathode rays are not affected by the material of the electrodes or the nature of the gas present.
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