Which of these lenses can be used to form virtual images of the object?
(i) Concave lens is used to get a virtual and diminished image of an object.
Which lens produces a real image?
Convex (converging) lenses can form either real or virtual images (cases 1 and 2, respectively), whereas concave (diverging) lenses can form only virtual images (always case 3). Real images are always inverted, but they can be either larger or smaller than the object.
What kind of image is formed by concave lenses?
virtual images
Is it possible to form a real image using a real object with a concave lens?
The concave lens will not produce real images. Real images are not formed by a concave lens since the rays passing through the concave lens diverges and will never meet.
What type of image is formed if the location of the object is at F in a concave lens?
Image Formation by Concave Lens
| Object location | Image location | Image nature |
|---|---|---|
| Infinity | At F2 | Virtual and Erect |
| Beyond infinity and 0 | Between F1 and Optical centre | Virtual and Erect |
How does the image of a concave lens always appear?
Plane mirrors, convex mirrors, and diverging lenses will always produce an upright image. A concave mirror and a converging lens will only produce a real image if the object is located beyond the focal point (i.e., more than one focal length away). 5. The image of an object is found to be upright and reduced in size.
What happens to the image size and its location as the object comes nearer the concave lens?
The object changes when it comes nearer the concave lens. The forming image is always at the place between the f and 2f. That is why it is being reduced. While the convex lens creates the opposite one.
How will a convex lens change the image of an object?
A convex lens is thicker in the middle than at the edges. This causes rays of light to converge. The light forms a real or virtual image depending on the distance of the object from the lens.
Where an object should be placed in front of a convex lens to get a real image of the size of object?
Where should an object be placed in front of a convex lens to get a real image of the size of the object? Answer: At twice the focal length, the image formed by the convex lens is real and of the same size as the object.
Where should an object be placed in front of a concave lens?
Answer. Answer: At twice the focal length of the lens in front of it. So if the lens has a focal length of 20 cm, the object must be placed 40cm in front of the lens which will then form an inverted image of the same size as the object, 40 cm behind the lens.
Where should an object be placed in front of a concave mirror to obtain an image which is real inverted and magnified?
For real, inverted and reduced image, the object must be placed beyond the centre of curvature. A concave mirror produces three times magnified real image of an object placed at 10 cm in front of it.
Where should an object be placed in front of a concave mirror to get a virtual image?
The object should be placed within the focus (between the pole and the focus) and in front of the concave mirror in order to obtain a virtual, erect and magnified image.
Where should an object be placed in front of a convex lens to get an enlarged virtual image?
To form an enlarged image of an object in front of a convex lens, it should be placed anywhere between 2F and O.
Where should an object be placed in order to get an enlarged real image?
Answer. Answer: object must be placed between the first focal point (F1) and the center of curvature (2F2) of the lens…
Where an object should be placed in front of concave mirror to get an erect virtual and enlarged image?
A concave mirror forms a virtual, erect and enlarged image of an object when it is placed between the pole and focus of the mirror.
Where should an object be placed in front of a concave mirror of focal length 15cm to have virtual image of magnification 3?
Focal length of concave mirror = 15 cm. Object should be place in front of given concave minor at a distance less than 15 cm. Image formed is virtual and erect.
Where should an object be placed in front of a concave mirror of focal length 20cm so as to obtain real image?
Where should an object be placed in front of a concave mirror of focal length 20 cm so as to obtain a two time magnified real image? [2011] Ans: 30 cm.
Where should an object be placed in front of a concave mirror of focal length f?
Answer. it should be placed in front of the focus itself.
Where should an object be placed in front of a concave mirror to obtain magnification of 3?
Between which two points of a concave mirror should an object be placed to obtain a magnification of -3? For m = – 3, the image is real, inverted and enlarged. The object must be placed between F and C of the concave mirror.