Light in a Tube: Exploring Discharge Tube Experiments

The video tutorial discusses JJ Thompson's experiments on electrical discharge through gases, focusing on the behavior of charged particles. It explains the cathode ray discharge tube, its components, and its role in understanding atomic structure. The tutorial details the setup of the tube, including electrodes and vacuum conditions, and describes how cathode rays are generated and observed.

What happens when two positively charged particles are brought close to each other?

• They attract each other.

• They form a new compound.

• They repel each other.

• They remain neutral.

Who conducted the cathode ray discharge tube experiments in the 19th century?

• Albert Einstein

• Isaac Newton

• JJ Thompson

• Niels Bohr

What is the primary purpose of removing most of the air from the cathode ray tube?

• To allow the cathode rays to travel without obstruction

• To cool down the tube

• To prevent the electrodes from corroding

• To increase the pressure inside the tube

What is the role of the cathode in a cathode ray tube?

• It is used to measure the pressure inside the tube.

• It emits cathode rays when connected to a battery.

• It absorbs cathode rays.

• It is the positively charged electrode.

What happens when cathode rays strike a fluorescent zinc sulfide screen?

• They cause green light scintillations.

• They emit sound waves.

• They produce a red light.

• They create a magnetic field.