Cathode rays (AQA A-Level Physics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is a cathode ray?
What is a cathode ray?
A stream of particles in a discharge tube
Where is the glow most intense in a discharge tube?
Where is the glow most intense in a discharge tube?
At the cathode
Who conducted experiments that led to the discovery of the electron?
Who conducted experiments that led to the discovery of the electron?
J.J. Thomson
What charge do cathode rays carry?
What charge do cathode rays carry?
Negative charge
How do cathode ray properties vary with different gases in the tube?
How do cathode ray properties vary with different gases in the tube?
They remain consistent
What does the high charge-to-mass ratio of cathode rays indicate?
What does the high charge-to-mass ratio of cathode rays indicate?
They are subatomic particles
What were cathode rays concluded to be?
What were cathode rays concluded to be?
Electrons found in all atoms
What happens to gas atoms when high potential difference is applied?
What happens to gas atoms when high potential difference is applied?
Electrons are stripped away
Why do excited gas atoms produce a visible glow?
Why do excited gas atoms produce a visible glow?
They emit photons returning to original state
Why is the glow brightest at the cathode?
Why is the glow brightest at the cathode?
Ion-electron recombination emits light