What is needed for cathode rays?

cathode ray, stream of electrons leaving the negative electrode (cathode) in a discharge tube containing a gas at low pressure, or electrons emitted by a heated filament in certain electron tubes.

Can cathode rays travel in vacuum?

Cathode rays are so named because they are emitted by the negative electrode, or cathode, in a vacuum tube. They travel in straight lines through the empty tube. The voltage applied between the electrodes accelerates these low mass particles to high velocities.

What is cathode ray and its properties?

Property 1: Cathode rays travel in a straight line and can cast sharp shadows. Property 2: Cathode rays are negatively charged. Property 3: Electric field and magnetic field deflect cathode rays. Property 5: The properties of the cathode rays do not depend on the electrodes and the gas used in the vacuum tube.

Under what conditions cathode rays are produced?

(i) When electrical discharge is passed through gases at very low pressure, cathode rays are produced.

Do cathode rays travel in straight line?

Cathode rays are so named because they are emitted by the negative electrode, or cathode, in a vacuum tube. Since the electrons have a negative charge, they are repelled by the negative cathode and attracted to the positive anode. They travel in straight lines through the empty tube.

Do cathode rays have Colour?

cathode-ray tube (CRT), Vacuum tube that produces images when its phosphorescent surface is struck by electron beams. CRTs can be monochrome (using one electron gun) or colour (typically using three electron guns to produce red, green, and blue images that, when combined, render a multicolour image).

Why do cathode rays cast shadow?

Answer: Cathode rays are stream of electrons observed in the discharge tube. Cathode rays travel in a straight line. As it is nothing but the flow of electrons so cathode rays can cast shadow of opaque objects placed in their path.

Which gas is used in cathode ray experiment?

For better results in a cathode tube experiment, an evacuated (low pressure) tube is filled with hydrogen gas that is the lightest gas (maybe the lightest element) on ionization, giving the maximum charge value to the mass ratio (e / m ratio = 1.76 x 10 ^ 11 coulombs per kg).

How do cathode rays differ from anode rays?

Cathode rays contain material particles (electrons) which are negatively charged. Anode rays contain material particles which are positively charged. These rays are deflected in both magnetic and electric fields. These rays are deflected in both magnetic and electric fields.

Are anode rays heavier than cathode rays?

Cathode rays travel in straight line. Anode rays are heavier than cathode rays.

Do anode rays travel in straight line?

Anode rays is a beam of positive ions that is created by ionization of gas in discharge tubes. These are also known as Canal rays. These rays are material particles which travel in a straight line. They can be deflected by external magnetic fields and they also affect the photographic plate.