Hey everyone, I'm reading a chapter on reflection of Light and I had some doubts:- 1 Is a real, erect image possible? What about a virtual, inverted image? 2 How can you see a real image without a screen? Can you see it in the air or something? 3 When you move away from a plane mirror the image becomes smaller. However your size remains the same. How then, is the image size equal to the object size? 4 In my textbook it's given that "For spherical mirrors of small apertures R=2f” Why only for spherical of small apertures, why not large apertures too? 5 If a real image is formed between C and F and you capture it on a screen or a tablecloth etc., from which side do you see the image? Do you have to see from the concave mirror side or from the object side? Although to see from the object side I think the screen would have to be translucent or something. 6 When you look in a spoon (concave side) you see an inverted image of yourself. How? Shouldn't a real image be formed? Isn't the image in the spoon virtual? Or can you see a real image in the spoon? I thought that you had to capture real images on a screen? 7 In concave mirror, for object at focal point for all light rays radiating from a point on the object, the reflected rays are parallel to each other. But if you were to take the top point of the arrow-object then draw a ray going straight up you could say it comes from the focal point and would be reflected parallel to the principal axis, not the other reflected rays. What's wrong with that? 8 Why are light rays from an object at infinity all parallel? Couldn't you have a light ray from the sun passing through the focal point that wasn't coincident to the principal axis? Even by a teensy bit? 9 Just because two rays coming from a point on an object, after reflection from a concave mirror, converge at a point or appear to diverge from a point behind the mirror (if the object is between P and F), how do you know that all other reflected rays from that point will also converge or appear to diverge from that same point? 10 If a point object was kept on the principal axis then where would the image be formed? Couldn't it be formed at any point along the principal axis? Same for a point on a non-point object that is on the principal axis. The corresponding point of the image to the object at that point could be anywhere on the principal axis, right? 11 My text book says that at F object is at infinity, enlarged and real and inverted but shouldn't there be no image? The reflected rays are parallel so they should never meet right? 12 My textbook says that for an object at infinity, the image would be at the focus and it would be point sized. So if I looked at the sun in a convex mirror, I'd see a point?