G12 Quiz 2 Cathode Rays
10 Questions
| Attempts: 756
Questions and Answers
- 1.
The diagram shows a simple cathode-ray tube.Which part emits the electrons?- A.
A
- B.
B
- C.
C
- D.
D
- 2.
Charged particles are emitted from the cathode of an oscilloscope.What is the name and the charge of these particles?
- A.
A
- B.
B
- C.
C
- D.
D
- 3.
In order to produce a beam of cathode rays, a heated filament is placed near to anWhat is the type of charge on the anode and why is this charge chosen?
- A.
A
- B.
B
- C.
C
- D.
D
- 4.
The diagram shows a cathode-ray tube.A student wants the cathode rays to make a spot at P on the screen.Which parts of the cathode-ray tube should be positive?
- A.
Anode and top Y plate
- B.
Anode and bottom Y plate
- C.
Cathode and top Y plate
- D.
Cathode and bottom Y plate
- 5.
A cathode-ray tube has an anode and an earthed cathode.Which line in the table shows the charge and the temperature of the anode?A
- A.
A
- B.
B
- C.
C
- D.
D
- 6.
A cathode-ray beam passes through an electric field between charged parallelplates.In which direction is the beam deflected?
- A.
Towards the negative plate
- B.
Towards the positive plate
- C.
Into the page
- D.
Out of the page
- 7.
The diagram below shows the screen of a cathode-ray oscilloscope tube.The tube is placed between a pair of charged plates.Which diagram shows the new position of the spot?
- A.
A
- B.
B
- 8.
A beam of cathode rays is entering the space between two charged metal plates.What sort of particles make up cathode rays?
- A.
Alpha particles
- B.
Electrons
- C.
Neutrons
- D.
Protons
- 9.
The figure shows a type of tube in which cathode rays can be produced.A potential difference (p.d.) is connected between two terminal in order to cause thermionic emission. Between which two of the four labelled terminals is the p.d. connected?
- A.
Between A and B
- B.
Between A and D
- C.
Between B and D
- D.
Between C and D
- 10.
The figure shows a type of tube in which cathode rays can be produced.What occupies the remaining space in the tube?
- A.
Air
- B.
Alpha particles
- C.
Hydrogen
- D.
Vacuum
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