What is electrostatic focusing in Cathode ray tube?

Answer 1

The cathode ray tube uses a beam of electrons to paint a phophoresent screen. It has to first pass by electrical steering plates. Depending on the voltages on these plates the beam goes as directed. There are systems that use coils.

Answer 2

From figure

V1T = V1 sin θ1,

V2T = V2 sin θ2

But V1T = V2T

V1 sin θ1 = V2 sin θ2

Or V2/V1 = sin θ1 / sin θ2

Answer 3

Using electric field charged particles could be streamlined and this is known to be electrostatic focusing.

Answer 4

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