Question

The image formed by a lens is always erect, virtual and

smaller in the size for an object kept in different positions in

front of it. Identify the type of lens.​

Answer 1

Answer:

the lens are concave lens.

Explanation:

because of the concave lens is thin at middle and thick at edge. it forms virtual images only. The image is always erect. It is used to correct Myopia.

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Answer 2

Answer:

Concave or diverging lens

Explanation:

It is thinner at the centre than at the edges. It diverges a beam of light on refraction through it. It has a virtual focus. A concave lens always form a virtual image of an object because it diverges all parallel rays so that they appear to come from focus on the other side of the lens. Plane mirrors, convex mirrors, and diverging lenses can never produce a real image. A concave mirror and a converging lens will only produce a real image if the object is located beyond the focal point (i.e., more than one focal length away). A virtual image is always erect / upright. The size of the image formed decreases with increase in distance between the object and the mirror.