Cathode ray tube

What is used to evacuate the discharge tube in the experiment?

• An electric field

• A cathode ray detector

• A high voltage battery

• A vacuum pump

What happens when the pressure in the tube is reduced and a high potential difference is applied?

• The tube explodes

• Nothing happens

• A glow is seen on the walls of the glass tube

• The tube becomes a superconductor

What does the deflection of cathode rays towards the positive plate indicate?

• Cathode rays are positively charged

• Cathode rays are not affected by electric fields

• Cathode rays consist of negatively charged particles

• Cathode rays are neutral

What is demonstrated when a wheel placed in the path of cathode rays begins to rotate?

• Cathode rays are made of gas

• Cathode rays can generate electricity

• Cathode rays have mass and kinetic energy

• Cathode rays emit light

How do cathode rays react in the presence of a magnetic field?

• They slow down

• They speed up

• They become invisible

• They are deflected