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What is the actual significance of the focal point of a lens? The focal point is where the light from a parallel bundle of rays comes to focus, this location is at one focal length from the lens This focal length f f is important relative to other properties of a lens
Why does the focus point of the eye does not burn the retina? To see an object, its light rays have to meet on the retina in the focal point But the focal point is a small white dot Basically nothing would be distinguishable and the retina would burn becaus
What is meant by the focal point of a spherical mirror? The focal point of a spherical mirror is defined as the focal point of rays which hit the mirror close to the optical axis, where the sphere is well approximated by a paraboloid, and it coincides with the focal point of that paraboloid
Focal Point vs where you see the images - Physics Stack Exchange I am trying to figure out where is the focal point and where is the image I read some information online about the point where you see the image is the focal point, but however, my supervisor ment
How can the placement of object on focal point produce no image? At the focal point the image switches from being at −∞ − ∞ to +∞ + ∞ This is the nature of parallel lines A slight deviation from parallel makes the intersection switch from one side to the other If you want the image and object to be at the same place on the optical axis, the object should be located at the centre of curvature
optics - Convergence of rays at focal plane after reflection from . . . The focal plane, a plane perpendicular to the principal axis passing through F, captures this convergence beautifully Even if the initial parallel rays weren't perfectly aligned in a plane perpendicular to the axis, their converged portions at F will all lie within the focal plane
Put a sensor at the focal length, behind, or in front? 12 My intuition tell me that at the focal length a convex lens all the light converges to a point Following that logic, it would make sense to me that a camera chip would either need to go slightly in front or slightly behind the focal point in order to expose the entire chip to the incoming light