Which of the following is true for cathode ray?

CONCEPT:

Cathode rays: 

• Cathode rays are the stream of high-speed negatively charged particles moving from cathode to anode in a discharge tube.

Properties of Cathode Rays:

• Cathode rays travel in a straight line.
• They are streams of fast-moving electrons.
• Cathode rays heat up the material on which they fall.
• The cathode rays in the discharge tube are the electrons produced due to the ionization of gas and that emitted by the cathode due to the collision of positive ions.
• Cathode rays are emitted normally from the cathode surface. Their direction is independent of the position of the anode. 
• Cathode rays are deflected by an electric field and also by a magnetic field.
• Cathode rays ionize the gases through which they are passed.
• Cathode rays can penetrate through the thin foils of metal.