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If you have a concave mirror with focal length of 8.5 cm where would you place a piece of paper so the image projected onto it is twice as far from the mirror as the object is?
Wiki User
∙ 12y ago
Use the equation, 1/f = 1/di + 1/do
So, di/f = 1+1/m (m = magnitude)
If we are trying to find twice the distance, m=2
Therefore, di/f = 1+1/2
di/f = 1.5
Take the focal length out and plug it into the problem and you have, di = 8.5*1.5
So finally, di = 12.75
The piece of paper would have to be placed at 12.75cm in order for the real image to appear twice as far as the object.
Wiki User
∙ 12y ago
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Focal length of a concave mirror?
1/object distance + 1/ image distance = 1/focal length
What shape is a concave mirror and what do things look like in it?
A concave mirror bulges away from the incident light. The image of an object depends on where exactly the object is placed - relative the to focal length of the mirror. See the attached link for more details.
An object is kept in front of a concave mirror of focal length 20cm the image is 3 times the size of the object calculate 2 possible diastances of the object from the mirror?
40cm
What is the focal length of a concave mirror that forms an image 25 cm from the mirror if the object distance is 20 cm?
1/o + 1/i = 1/ff = (o x i)/(o + i)f = 11.1 cm (rounded)
An object is placed 4 cm in front of a concave mirror with a focal point of 1 cm describe the image that is formed?
A concave lens will appear!
What will the image produced by a concave mirror be?
A concave mirror can produce a real or virtual image, depending on the location of the object. Real images are formed in front of the mirror and can be projected onto a screen, while virtual images are formed behind the mirror and cannot be projected. The characteristics of the image, such as magnification and orientation, are determined by the mirror's focal length and the object's distance from it.
What is the image formed with a concave mirror?
A concave mirror can form either a real or virtual image, depending on the object distance and mirror focal length. Real images are formed when the object is located beyond the focal point, while virtual images are formed when the object is between the mirror and the focal point. Real images are inverted and can be projected onto a screen, while virtual images are upright and cannot be projected.
How can a rough value of the focal length of a concave mirror be obtained?
One way to estimate the focal length of a concave mirror is to use the mirror formula: 1/f = 1/do + 1/di, where f is the focal length, do is the object distance, and di is the image distance. By measuring the object distance and the corresponding image distance, you can calculate an approximate value for the focal length of the concave mirror.
What are the characteristics of image formed by concave mirror?
The image formed by a concave mirror can be real or virtual, depending on the object's position relative to the focal point. Real images are inverted and can be projected onto a screen, while virtual images are upright and cannot be projected. The size of the image can vary depending on the object's distance from the mirror.
What are the properties of images that a concave mirror can produce?
A concave mirror can produce both real and virtual images, depending on the object's position relative to the mirror's focal point. Real images are formed in front of the mirror and can be projected onto a screen, whereas virtual images are formed behind the mirror and cannot be projected. The size and orientation of the image will vary based on the object's distance from the mirror.
What type of mirror can be used to obtain the real image of an object?
A concave mirror can be used to obtain a real image of an object. This type of mirror curves inward, causing light rays to converge at a point, creating a real and inverted image. The image produced by a concave mirror can be projected onto a screen.
How do you find focal length of concave mirror?
The focal length of a concave mirror can be found by using the mirror formula, which is 1/f = 1/do + 1/di, where f is the focal length, do is the object distance, and di is the image distance. By measuring the object and image distances from the mirror, you can calculate the focal length using this formula.
Where will the image be formedif an object is kept 15cm from the pole of a concave mirror of a focal length 20cm?
The image will be formed on the same side as the object in this scenario, since the object is within the focal length of a concave mirror. The image will be virtual, upright, and magnified.
What type of mirror is used whenever a magnified image of an object is used?
A concave mirror is typically used to create a magnified image of an object. The mirror curves inward and can produce an enlarged virtual image when the object is placed within the focal length of the mirror.
Why do images in a concave mirror appear inverted?
Images in a concave mirror appear inverted because the light rays converge at a focal point in front of the mirror, causing the image to be flipped. This is due to the way the mirror reflects and converges the light rays, creating a real, inverted image.
How can a concave mirror produce a virtual image?
A concave mirror can produce a virtual image when the object is placed between the focal point and the mirror's surface. This causes the reflected light rays to diverge and appear to come from behind the mirror, creating a virtual image that cannot be projected onto a screen.
How would the eye perceive an image created by a concave mirror and by a convex mirror?
The image formed by a concave mirror can be real or virtual, depending on the object's position relative to the mirror. A real image is formed in front of the mirror and can be projected onto a screen, while a virtual image is formed behind the mirror and cannot be projected. Conversely, a convex mirror always produces a virtual, upright, smaller image of the object. The image appears closer to the mirror than the actual object and does not form a focused point.
