definition of the term focus
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⭐Focus is a point on the principal axis in which all the incident rays originating from a point converge.
⭐It is represented by 'F'.
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⭐Focus is a point on the principal axis in which all the incident rays originating from a point converge.
⭐It is represented by 'F'.
__________________
# ¢' $ #
Hope it helps
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