Question

Sunlight is observed to focus at a point 18.5 cm behind a lens. a. what kind of lens is it?

Answer 1

The lens is convex lens.

A convex lens is likewise called converging lens as it converges parallel beam of mild on a factor referred to as focal point. The convex lens is a lens that converges rays of mild that carry parallel to its important axis (i.e. converges the incident rays towards the foremost axis) that's rather thick throughout the center and thin at the lower and higher edges. the edges are curved outward rather than inward.

Convex lenses are used in microscopes, magnifying glasses and eyeglasses. they may be also used within the cameras to create actual images of items present at a distance. the character of the photographs relies upon on the manner those lenses are used.

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