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The focal distance formula in optics is 1/f 1/do 1/di, where f is the focal length, do is the object distance, and di is the image distance. This formula is used to calculate the distance between the focal point and the lens or mirror.

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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.


An object is placed between focus and centre of curvature of a concave mirror. Draw a ray diagram and derive mirror formula. Also write magnification formula.?

In a concave mirror, when an object is placed between the focus and the center of curvature, the image formed is real, inverted, and enlarged. To derive the mirror formula, use the mirror formula: 1/f = 1/v + 1/u, where f is the focal length, v is the image distance, and u is the object distance. The magnification formula is: M = -v/u, where M is the magnification, v is the image distance, and u is the object distance.


How do you calculate the position of the image formed?

To calculate the position of the image formed by a lens or mirror, you need to use the thin lens or mirror formula: 1/f = 1/do + 1/di, where f is the focal length of the lens or mirror, do is the object distance, and di is the image distance. Once you have the values for the focal length and object distance, you can solve for the image distance to determine the position of the image formed.


What is the distance between the image and the plane mirror if the object is at 15m?

The distance between the image and the plane mirror is the same as the distance between the object and the mirror. Therefore, if the object is 15m away from the mirror, the image will also be 15m behind the mirror.


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.

Related Questions

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.


An object is placed between focus and centre of curvature of a concave mirror. Draw a ray diagram and derive mirror formula. Also write magnification formula.?

In a concave mirror, when an object is placed between the focus and the center of curvature, the image formed is real, inverted, and enlarged. To derive the mirror formula, use the mirror formula: 1/f = 1/v + 1/u, where f is the focal length, v is the image distance, and u is the object distance. The magnification formula is: M = -v/u, where M is the magnification, v is the image distance, and u is the object distance.


How do you calculate the position of the image formed?

To calculate the position of the image formed by a lens or mirror, you need to use the thin lens or mirror formula: 1/f = 1/do + 1/di, where f is the focal length of the lens or mirror, do is the object distance, and di is the image distance. Once you have the values for the focal length and object distance, you can solve for the image distance to determine the position of the image formed.


What is the distance between the image and the plane mirror if the object is at 15m?

The distance between the image and the plane mirror is the same as the distance between the object and the mirror. Therefore, if the object is 15m away from the mirror, the image will also be 15m behind the mirror.


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 is the relationship between object distance image distance and focal length of a concave mirror?

In a concave mirror, the relationship between object distance, image distance, and focal length is described by 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. As the object distance changes, the image distance and focal length will also change accordingly.


What is the Magnification equation for concave mirror?

The magnification equation for a concave mirror is given by the formula: M = - (image distance) / (object distance), where M is the magnification, image distance is the distance from the mirror to the image, and object distance is the distance from the mirror to the object. Negative magnification indicates an inverted image.


Does mirror formula hold for plane mirror?

Yes, the mirror formula, 1/f = 1/do + 1/di, holds for plane mirrors as well. In the case of a plane mirror, the focal length (f) is considered infinite. This means that the distance of object (do) is equal to the distance of the image (di), but in opposite directions.


What will the object distance be equal to when using concave mirror only?

When using a concave mirror, the object distance (distance of the object from the mirror) can vary depending on where the object is placed. If the object is located beyond the focal point of the mirror, the object distance will be positive. If the object is placed between the mirror and the focal point, the object distance will be negative.


With a plane mirror what would be the relationship between di the image distance and do the object distance?

In a plane mirror, the image distance (di) is equal to the object distance (do). The image formed is virtual, upright, and the same size as the object, and it appears behind the mirror at the same distance as the object in front of the mirror.


The distance between a mirror and its focal point is called the?

Focal length, positive number with a concave mirror, negative for a convex mirror.


An object 5 millimeter high is located 15 millimeter in front of a plane mirror How far from the mirror is the image located?

The distance between the object and mirror is 15 mm. The distance between the image and mirror is 15 mm. Therefore, the distance between the image and object is 15 mm plus 15 mm which equals 30 mm.