In: Physics
1. The image is vanishingly small and near the focal point: - object beyond \(2 \mathrm{f}\)
2. The image is real and inverted: - object at \(2 \mathrm{f}\)
3. The image is infinitely large and infinitely far away: - object between \(2 \mathrm{f}\) and \(\mathrm{f}\)
4. The image is virtual and upright: - object at \(\mathrm{f}\)