Question

Define the following terms in the context of spherical mirrors:
1. pole
2. centre of curvature
3. principal focus
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Answer 1

⚠ _ Hello_ ⚠

Explanation:

⚫ POLE ⤵

$the \: middle \: part \: of \\ \: reflecting \: surface \: is \\ \: called \: pole.$

⚫ CENTRE OF CURVATURE ⤵

$the \: middle\: point \\ \: of \: sphere \: of \: spherical \: \\ \: mirror \: known \: \\ as \: centre \: of \: curvature$

⚫ PRINCIPAL FOCUS ⤵

$after \: reflection \: the \: \\ light \: rays \: meet \: at \\ \: a point \: called \\ \: principal \: focus.$

✴ Hope it's help you✴

Answer 2

Answer:

pole-

it is the middle point of the reflecting surface.

centre of curvature-

it is the center of the circle of witch the mirror is a part.

principle focus-

it is the common point through which parallel rays meet after reflection