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No, convex lenses have positive focal lengths. The focal length is the distance from the lens to its focal point where light rays converge. In convex lenses, parallel light rays are focused to a point on the opposite side of the lens, resulting in a positive focal length.

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1y ago

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Related Questions

How do you find the power of lenses using focal lengths?

Power (F)= 1/focal length (f) focal length f, is measured in meters the power, F, is in dioptres (D) In converging or convex lenses the power is positive In diverging or concave lenses, the power is negative :)


Why do convex lenses have shorter focal lengths than thin convex lenses?

The convex lenses are converging lens so when the curvature of the lens increases the focal length will decrease which helps when looking up close. A thin convex lens is for seeing things from a distant.


Do thick convex lenses have longer or shorter focal lengths than thin convex lenses?

As a thicker lens has more material to do bend the light further it it would have a shorter focal length


What are the differences between biconvex and plano-convex lenses in terms of their optical properties and applications?

Biconvex lenses are curved on both sides, while plano-convex lenses are flat on one side and curved on the other. Biconvex lenses have a shorter focal length and are used for magnification, whereas plano-convex lenses have a longer focal length and are used for focusing light in optical systems.


Why is the focal length negative for a convex mirror?

The focal length is negative for a convex mirror because the light rays do not actually converge at a single point in front of the mirror. Instead, they appear to diverge from a virtual focal point behind the mirror.


Will the focal length be greater in a thick or thin convex lens?

The focal length will be greater in a thin convex lens compared to a thick convex lens. Thinner lenses have less curvature, causing light rays to converge more gradually and thus increasing the focal length.


Why focal length of convex lens is easier to find than a concave lense?

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.


Do concave lenses have negative focal length?

Yes, concave lenses have negative focal lengths. This is because the focal point for a concave lens is located behind the lens itself, causing light rays to diverge.


The distance between a mirror and its focal point is called the?

Focal length, positive number with a concave mirror, negative for a convex mirror.


What is the positive lens is the same as?

The focal point F and focal length f of a positive (convex) lens, a negative (concave) lens, a concave mirror, and a convex mirror. The focal length of an optical system is a measure of how strongly the system converges or diverges light.


Why the study was under taken of focal length of a convex lens by graphical method?

to determine the focal length of a convex mirror.


What are the types of lenses?

There are two types of lenses - fixed focal and zoom lenses.