Question

Define aperture in physics and principal axis and radius of curvature!
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Answer 1

Answer:

The radius of the sphere of which the mirror forms the part. Represented by “R”. The straight line joining the pole and the centre of curvature. It is normal to the mirror at its pole. The diameter of the spherical mirror is called its aperture.

Explanation:

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Answer 2

✯Question✯

• Define aperture , principal axis , radius of curvature.

✬Answer✬

➺Aperture: The plane surface of the mirror through which light rays enter        and fall on the mirror is called its aperture.

➺Principal axis: It is the straight line joining the pole of the mirror to its centre of curvature.

➺Radius of curvature: The radius of sphere of which the spherical mirror is a part, is called the radius of curvature of the mirror.

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➺Centre of curvature: The centre of curvature is the centre of the sphere of which the mirror is a part.

➺Pole: The geometric centre of the spherical surface of mirror is called the pole of mirror.