How do you find the height of a picture on a lens?
Where M is the magnification, hi is the height of the image, and ho is the height of the object. Using this formula, we can solve for the height of the image by multiplying both sides by the height of the object.
What is the distance from the image to the lens?
where u is the distance of the object from the lens; v is the distance of the image from the lens and f is the focal length, i.e., the distance of the focus from the lens. N.B. other sign conventions are sometimes used in the literature. = 2 6 − 1 6 = 1 6 So v = 6 cm.
How do you calculate image height?
Answers and Replies. The ratio of image height to object height = the magnification will equal the ratio of distance from image over distance of the object to the mirror or lens.
WHAT IS lens formula?
Lens formula is a well-designed formula that is applicable for concave as well as convex lenses. The lens formula is used to find image distance, type of image formed, and the focal length (f).
What is the ratio of the height of the image to the height of the object?
The ratio of the height of an image to the height of an object is known as magnification.
Is image distance same as focal length?
The focal length is equal to the image distance when the object is very, very distant (e.g. a star). A positive focal length lens (a converging lens) forms a real image of the star at a distance from the lens equal to its focal length.
What is image formula?
Image size Formula. The image size formula or magnification equation, relates the ratio of the image distance and object distance to the ratio of the image height and object height. The magnification equation is: M= (image height)/(object height) = – (image distance)/(object distance)
How do you find the height of an image in a convex mirror?
The mirror formula is represented by the following equation:
- 1f=1v+1u.
- Where f is the focal length of the mirror, u the object distance is the distance of the object from the mirror and v the image distance is the distance the image is formed from the mirror.
Why is U V 2f?
The values of u and v will be same for point A. So the coordinates of Point A must be (- 2f, 2f), because for a convex lens, when u =-2f, v=2f. Hence , half the value of either coordinate of A (i.e., distance OB) gives the focal length of the convex lens.