Answer:
Actual focal spot-
Explanation:
Actual focal spot-
it is referred to that spot of focal where beam of electron converge to one place.
focal sopt size for different process are
1) for mammography - 0.3 mm to 0.6 mm
2) for radiography - 1.00 to 1.2 mm
Focal length of focal spot can be calculated by using following relation
[tex]focal\ length = actual\ focal\ length * sin\theta[/tex]
where[tex] \theta[/tex] is angle of anode
