Where is the image always formed by a concave lens?
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Solution
Concave lens:
A concave lens has larger edges as well as narrower centers. Even though two spherical surfaces bulge inwards, a concave lens can sometimes be known as a “biconcave lens.”
When the object is placed between the infinity and the optical center of the lens then the resulting virtual and erect images are formed between the focus and the optical center of the lens.
When it is placed at infinity, the image is formed at the focus.
A ray diagram of the concave lens is shown below:
Therefore, the images are always formed by a concave lens between the focus and the optical center of the lens or at the focus when the object is at infinity.
