Question

An object is placed at F1 of concave lens. Where is the image formed and what is its nature​

Answer 1

Answer:

Object is at infinity. A highly diminished point sized, virtual and erect image is formed when object is at infinity by a concave lens at principal focus F1

Answer 2

Object at principal focus, F1:
An infinitely large, real and inverted image is formed at infinity when object is placed at principal focus, F1 of a convex lens. Properties of Image: Image is highly enlarged, real and inverted.
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