Do Concave Mirrors Always Form Real Images?

In summary, the conversation discusses the concept of concave mirrors and how they form images. It is mentioned that for objects closer to the mirror than the focal point, the image formed is virtual. The conversation also touches on the differences in image formation for concave mirrors used for makeup and shaving versus those with a smaller radius of curvature. The link provided may offer further insight into this topic.
  • #1
uday01
i want to know the concave mirros is always real images or any difference then how to calculate

thanks and regards
Uday
 
Science news on Phys.org
  • #2
No, if the object is closer to the mirror than the focal point, the image formed is virtual.
 
  • #3
uday01 said:
i want to know the concave mirros is always real images or any difference then how to calculate

thanks and regards
Uday
Makeup and shaving mirrors are (slightly) concave and form an 'erect', virtual image. Retreat to the centre of curvature and the image swells up, gets distorted and then flips to a real, 'inverted' image. Put your eye very close to the bowl of a spoon and you get a virtual image but the radius of curvature is so small that it can be difficult to see it well; the image that you see is usually real because of the size of the spoon. You can tel this because you can put your finger right next to it. Have a play and prove it all.
Then look at this link.
 
  • Like
Likes Drakkith

1. Do concave mirrors always form real images?

No, concave mirrors do not always form real images. It depends on the location of the object in relation to the focal point of the mirror. If the object is located between the focal point and the mirror, a virtual image will be formed. Only when the object is located beyond the focal point will a real image be formed.

2. How do concave mirrors form images?

Concave mirrors form images through a process called reflection. Light rays from an object reflect off the mirror's surface and converge at a specific point, forming an image. The shape of the mirror and the location of the object determine the characteristics of the image formed.

3. How do you determine the location and characteristics of an image formed by a concave mirror?

You can determine the location and characteristics of an image formed by a concave mirror using the mirror equation: 1/f = 1/do + 1/di, where f is the focal length of the mirror, do is the distance of the object from the mirror, and di is the distance of the image from the mirror. The magnification equation, M = -di/do, can also be used to determine the size and orientation of the image.

4. Can concave mirrors form magnified images?

Yes, concave mirrors can form magnified images. The size and orientation of the image depend on the distance of the object from the mirror. If the object is located beyond the focal point, the image will be magnified and inverted. If the object is located between the focal point and the mirror, the image will be magnified and upright.

5. Are there any practical applications of concave mirrors?

Yes, there are several practical applications of concave mirrors. They are commonly used in telescopes, headlights, and makeup mirrors. They are also used in solar power plants to concentrate sunlight and produce heat for generating electricity. In dentistry, concave mirrors are used to reflect light and improve visibility during oral examinations.

Similar threads

Replies
172
Views
15K
Replies
4
Views
1K
Replies
17
Views
2K
Replies
2
Views
903
Replies
5
Views
1K
Replies
17
Views
4K
Replies
10
Views
1K
Replies
6
Views
3K
Replies
18
Views
5K
Back
Top