Cherenkov Radiation: Investigating the Angle

[Apashanka das]

Homework Statement

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Homework Equations

The Attempt at a Solution

I find something contradictory about the cherenkov angle for the above two image[/B]

 

[Orodruin]

There is nothing contradictory. I believe you are confusing the angle of the cone with the angle of the wave front.

 

[ChrisVer]

Ι assume that your question is why the 1st image shows a ring and the 2nd is supposed to create a disk?
If that's the question, then I guess the answer is because the particle transverses a finite length within the medium.