Question

what is focal point​

Answer 1

Answer:

the point at which rays or waves meet after reflection or refraction, or the point from which diverging rays or waves appear to proceed.

Answer 2

Answer:

if we talk about mirrors,then,

a point on the principal axis where all the light rays meet or appear to meet after reflection from the mirror

if we talk about lens,then

a point where all the light rays meet or appear to meet after refraction from the lens

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