Focus is the point where light rays originating from a point on the object converge. The principal focus is defined as the point where a beam parallel to the principal axis appears to diverge converges from a point on the principal axis after passing through the lens
focus is the point where light rays originated from a point on object converge. the principal focus is defined as the point where a beam parallel to a principal axis appear to diverge converges from a point on the principal axis after passing through the lens.
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Explanation:
Focus is the point where light rays originating from a point on the object converge. The principal focus is defined as the point where a beam parallel to the principal axis appears to diverge converges from a point on the principal axis after passing through the lens
Answer:
focus is the point where light rays originated from a point on object converge. the principal focus is defined as the point where a beam parallel to a principal axis appear to diverge converges from a point on the principal axis after passing through the lens.