Question

principal axis, reflecting surface, Centre of curvature, pole,
principal focus

EXplain

Answer 1

Answer:

1. a line passing through the center of the surface of a lens or spherical mirror and through the centers of curvature of all segments of the lens or mirror.
2. A reflective surface is one that can bounce back light — like the reflective sun shade that you put over the windshield of your car. It bounces the sun's rays away, helping the interior cool.
3. the centre of a circle which passes through a curve at a given point and has the same tangent and curvature at that point.
4. Magnetic pole, region at each end of a magnet where the external magnetic field is strongest. A bar magnet suspended in Earth's magnetic field orients itself in a north–south direction. The north-seeking pole of such a magnet, or any similar pole, is called a north magnetic pole.
5. 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 2

Answer:

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