when the object is placed principal focus, the image is formed due to convex lenses _______
Answers
Answer:
(a) Above diagram shows Ray diagram when object keep outside the principal focus of a convex lens.
(b)
(i) If object is moved the lens, the image size will keep on increasing till the object reaches focus. After that, the size decreases but the image remains magnified. The image keeps moving away from the lens (on the opposite side of the lens) till the object reaches focus; after that the image is formed on the same side of the lens as the object.
(ii) If object is moved away from lens, the size will keep on decreasing and the image keeps on shifting towards the lens.
Answer:
No image is formed.
Explanation:
Light rays reflected from the mirror neither converge (forming a real image) nor diverge (allowing a virtual image to be seen).
Light rays from any point on the object are reflected so that they are parallel to each other. It’s simply the reverse case of parallel light rays hitting the mirror and forming an image at the principal focus.
When the object is placed at the focus the image is formed at infinity &highly enlarged.