Table of Contents
- 1 Why do you not get an image if your object is at the focal point?
- 2 When the object is at infinity the image is formed at spherical mirror?
- 3 When the object is placed between F and 2F of convex lens the image formed is?
- 4 What will be the position of the image if the object is placed at infinity concave mirror?
- 5 When image is at infinity in concave mirror?
- 6 What if the object is at F?
- 7 Why is the image formed inside a convex mirror not projected?
- 8 Why do the rays of a concave mirror converge after reflection?
Why do you not get an image if your object is at the focal point?
When the object is located at the focal point, no image is formed. As discussed earlier in Lesson 5, the refracted rays neither converge nor diverge. After refracting, the light rays are traveling parallel to each other and cannot produce an image.
What is the position of image when object is placed at infinity?
If the object is at the infinity, the image is formed at the focus. If the object is at the focus, the image is formed at the infinity. And the spherical mirrors produce virtual images only when the image is formed behind the mirror.
When the object is at infinity the image is formed at spherical mirror?
In the concave mirror, the image is formed at a focus point when an object is placed at infinity. In this case, a real and inverted image is formed. The image is much smaller (highly diminished) than an object. The concave mirror is a converging mirror.
What happens to the image when the object is between F and the mirror?
For concave mirrors, when the object is between F and the mirror, the image will be behind the mirror and will be enlarged and upright.
When the object is placed between F and 2F of convex lens the image formed is?
When an object is placed between F and 2F in front of a convex lens, the image formed is magnified, real, inverted and beyond 2F.
Why no image is formed at blind spot?
In the blind spot, there are no photoreceptors i.e. neither rods or cones, and, therefore, there is no image formation in this area. This is because of the lack of both rods and cones which means no detection of both light or colors. So, the correct answer is, “Here, cones and rods are absent.”
What will be the position of the image if the object is placed at infinity concave mirror?
Properties of image:
| Positions of Object and Image in Concave Mirror | ||
|---|---|---|
| Position of Object | Position of Image | Nature of Image |
| At infinity | At focus | Real and inverted |
| Between infinity and C | Between F and C | Real and inverted |
| At C | At C | Real and inverted |
When the object is placed between infinity and pole?
When the object is placed between the infinity and the pole of a convex mirror, the ray diagram will be as follows : The image formed will be behind the mirror between P and F. So the image is virtual, erect and diminished.
When image is at infinity in concave mirror?
For an object at infinity, a concave mirror produces an image of its focus which is real, inverted and diminished. For all rays appear to come parallel to the principal axis.
When a spherical mirror form a real image the image to its object is always?
This proves that the reflected rays are diverging and therefore, the mirror always produce a virtual and erect image. So, the mirror is a convex mirror. Similarly, the nature of the image formed in case of concave mirror, depends on the position of the object. Case 1.
What if the object is at F?
When the object is at F, no image is formed because the light rays are parallel and never converge to form an image. This is a real image. When the object is inside of F, the image is larger than the object, upright, and located behind the mirror (it is virtual).
Where does the image form when the object is at infinity?
Hence, when the object is at infinity the image will form at F. When object is placed between infinity and centre of curvature of a concave mirror the image is formed between centre of curvature (C) and focus (F).
Why is the image formed inside a convex mirror not projected?
This is because the focal point and the centre of curvature of the convex mirror are imaginary points and that cannot be reached. So the image is formed inside the mirror and cannot be projected on a screen. The image formed look smaller than the object from a distance but it gets larger as the object is brought closer to the mirror.
When the object is placed at principal focus of a mirror?
When the object is placed at principal focus (F) of a concave mirror, a highly enlarged image is formed at infinity. When the object is placed between principal focus and pole of a concave mirror, an enlarged, virtual and erect image is formed behind the mirror.
Why do the rays of a concave mirror converge after reflection?
The convergence of the rays after reflection is because the normal to the reflecting surface differs at each point on the mirror. There is a formation of different images in a concave mirror. It mainly depends on the distance between the object and the mirror. Concave mirrors form both real and virtual images.