It should be on the opposite side, so q is negative,right? That would give the right answer.TSny said:In order for the person to be able to clearly see an object placed 25 cm away, where should the image of the object formed by the lens be located? Should the image be on the same side of the lens as the object?
q is negative when the image is on the same side as the object.gungo said:It should be on the opposite side, so q is negative,right? That would give the right answer.
Focal length is the distance between the lens and the point where all light rays converge to form a sharp image.
The focal length of a spectacle lens can be calculated by dividing the lens power (in diopters) by 100. For example, a lens with a power of +2.00D has a focal length of 20 cm.
Yes, the focal length of a spectacle lens can be changed by adjusting the lens power. A higher lens power will result in a shorter focal length, while a lower lens power will result in a longer focal length.
The focal length of a spectacle lens determines how light rays from an object are refracted to form an image. A shorter focal length will result in a more magnified image, while a longer focal length will result in a smaller, less magnified image.
No, the focal length of a spectacle lens varies for each individual depending on their prescription and the shape of their eye. It is important to have an eye exam and a personalized prescription to ensure the correct focal length for optimal vision correction.