Table of Contents
- 1 Can image distance be 0 in concave mirror?
- 2 What does it mean if the image distance is zero?
- 3 When the distance of an object from a concave mirror is decreased?
- 4 What is the minimum distance between an object and concave mirror?
- 5 What are the rules of a concave mirror?
- 6 What are the rules for image formation in concave and convex mirror?
Can image distance be 0 in concave mirror?
The minimum distance of the object and its real image from a concave mirror is zero and this occurs when the distance between the object and the mirror is equal to twice the focal length.
What does it mean if the image distance is zero?
Then altering the object distance to values less than one focal length produces images that are upright, virtual and located on the same side of the lens as the object. Finally, if the object distance approaches 0, the image distance approaches 0 and the image height ultimately becomes equal to the object height.
When using a concave mirror there’s no image formed if?
When the object is located at the focal point, no image is formed. As discussed earlier in Lesson 3, light rays from the same point on the object will reflect off the mirror and neither converge nor diverge.
How do you find the distance of an image in a concave mirror?
- The mirror formula is 1f=1v+1u.
- The magnification m is given by m=−vu.
- According to sign conventions, for a concave mirror, the focal length (f) is negative, the object distance (u) is negative, the image distance (v) is positive for a virtual image and negative for a real image.
When the distance of an object from a concave mirror is decreased?
When the distance of an object from a concave mirror is decreased from 15 cm to 9 cm, the image gets magnified 3 times than that in first case.
What is the minimum distance between an object and concave mirror?
Zero
The minimum distance between an object and its real image in the case of a concave mirror is Zero.
What happens when object distance is zero?
as object distance is decreased zero, that is the object is held very close to the lens ,the images in a diverging lens and converging lens become almost similar.
What happens when image distance is infinity?
As the object distance extends to infinity, 1/o tends toward zero. That means that the image distance equals the focal length. To focus at infinity, the center of the lens needs to be the focal length away from the detector. On the opposite end, as the image distance approaches infinity, 1/i approaches zero.
What are the rules of a concave mirror?
Rules for Obtaining Images Formed by a Concave Mirror
- A ray coming parallel to the principal axis is reflected through the principal focus of the concave mirror.
- The ray of light passing the principal focus becomes parallel to the principal axis after being reflected from the mirror.
What are the rules for image formation in concave and convex mirror?
Only a concave mirror is capable of creating a real image and this only occurs if the object is situated at a greater distance than the focal length of the mirror’s surface. The image formed in a convex mirror is always virtual and erect, whatever be the position of the object.
What is the distance of the object from a concave mirror?
The distance between the object and its inverted image formed by a concave mirror is 25cm.