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yes, focal lens length has three classifications

Q: Does the focal lens length have three classifications?

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That is incorrect. The length of a lens, or focal length, is the distance from the lens to its principal focus.

Yes, a diverging lens does have a focal length. The focal length of a diverging lens is negative, as the light rays diverge after passing through the lens.

The distance from a lens to the focal point is called the focal length.

The focal length of a lens is the distance from the center of the lens to the point at which it focuses light rays. The bigger the focal length, the more powerful the lens. ChaCha!

Cutting a lens in half vertically will not change the focal length. The focal length of a lens is determined by its shape and curvature, which remain the same after cutting.

The lens with a focal length of 5 cm has greater power. Power is inversely proportional to focal length, so the shorter focal length lens will have a greater power.

There are three factors affecting the focal length of a lens. 1. refractive index of the material of lens. 2. refractive index of the surrounding medium 3. the radius of curvature of the lens surfaces.

focal length of the lens

The focal length of a convex lens is easier to find than a concave lens because for a convex lens, the focal length is positive and is measured from the lens to the focal point. In contrast, for a concave lens, the focal length is negative and the rays of light are diverged. This makes it more challenging to find the focal point accurately.

The distance from the centre of the lens to the focal point.

The focal length of a telescope is dependent on the design and specifications. It cannot be determined solely based on the objective lens size. The focal length needs to be provided by the manufacturer or measured using specific techniques.

The curvature of the eye's lens is related to its focal length: a more curved lens will have a shorter focal length, which allows the eye to focus on near objects. Conversely, a less curved lens will have a longer focal length, allowing the eye to focus on distant objects.