Question

what are the common terms used in refraction through penses?​

Answer 1

Answer:

Terms Related to spherical lenses

Important terms for spherical lens:

Reflection of Light.

Refraction of Light.

Lens.

Refraction Lens.

Convex Lens.

Concave Lens.

Lens Formula.

Answer 2

Answer:

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$\red{\textsf{•}}$ Terms

$\red{\textsf{→}}$ Pole

The centre of the spherical refracting surface of the lens is called the pole. The point where the principal axis meets the surface of the lens.

$\red{\textsf{→}}$ Optical Centre

The point on the principal axis at the centre of the lens is called Optical centre.

$\red{\textsf{→}}$ Centre of Curvature

A lens has two spherical surfaces, these two spherical surfaces form a part of a sphere. The centre of these spheres is known as the centre of curvature.

$\red{\textsf{→}}$ Principal axis

The principal axis is an imaginary line passing through the centres of curvature and the pole.

$\red{\textsf{→}}$ Aperture

The area of the lens suitable for refraction is called Aperture. The aperture of the lens is the effective diameter of its light-transmitting area.

$\red{\textsf{→}}$ Focus

Focus is the point onto which collimated light parallel to the axis is focused.

$\red{\textsf{→}}$ Focal length

The focal length is the distance between the optical centre and the focal point or focus of the lens

$\red{\textsf{→}}$ Power

The power of the lens is the reciprocal of its focal length. The S.I unit of power is Dioptre.

Explanation:

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