Lenses can be either converging or diverging.
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False
True.
To determine if a lens is converging or diverging, you can use the sign convention. In the sign convention, positive focal lengths represent converging lenses, while negative focal lengths represent diverging lenses.
Converging lenses are thicker in the middle and thinner at the edges. They cause light rays that are initially parallel to converge to a focal point after passing through the lens.
On the other hand, diverging lenses are thinner in the middle and thicker at the edges. They cause light rays that are initially parallel to diverge away from each other.
By observing the physical characteristics of the lens and knowing the sign convention for focal lengths, you can determine if a lens is converging or diverging.