When a convex lens of focal length f is cut into two halves along the principal axis What is the focal length of each half?
(i) If the lens is cut along the principal axis than there will be no change in the focal length of the lens because the radius of curvature will remain the same, hence the focal length will remain unchanged.
When a lens of focal length f is cut into two pieces along its axis the focal length of each piece becomes?
If a symmetrical convex lens of focal length f is cut into two parts along the principal axis, then focal length of each part remains unchanged at f. If these two parts are joined with curved ends on one focal length of the combination is 2f. But joining two parts in opposite, net focal length becomes ∞.
What will happen to its focal length if it is cut into two parts a horizontally b vertically?
When cut vertically, focal length is doubled.
What happens to the focal length of the convex lens when it is cut horizontally?
Answer: If a convex lens is cut horizontally then radii of curvature on both sides of the lens i.e., R1 and R2 will remain same as before. As R1 and R2 do not change, so there will be no change in focal length of the lens.
What happens to the focal length of the convex lens when it is cut vertically?
When the lens is cut horizontally then the focal length of the lens but when the lens is cut vertically then the focal length of the lens changes. As the lens is cut vertically the half of the lens is cut away, therefore ${R_2} = 0$.
What will happen to the focal length of a convex lens is cut perpendicularly?
While an equiconvex lens is cut parallel to the principal axis, the focal length remains equal and when the lens is cut perpendicular to the principal axis, the focal length is twice the original.
What is combined focal length?
The focal length of the combination of two convex lenses in contact is f. and if they are separated by a distance, then focal length of the combination is f1. (B) f=f1. (C) f
When an object is placed at infinity then the image formed by a convex lens is?
An infinitely large, real and inverted image is formed at infinity when object is placed at principal focus, F1 of a convex lens. Properties of Image: Image is highly enlarged, real and inverted.
What happens when convex lens is cut?
The focal length will remain constant if a convex lens is cut in half horizontally because the focal length of a lens depends on its two radii of curvature and the material of the lens. As no change in the material or curvature occurs, the focal length of the lens will remain constant.
What happens when convex lens is cut vertically?
When the lens is cut horizontally then the focal length of the lens but when the lens is cut vertically then the focal length of the lens changes.
What happens to the focal length of convex lens when it is cut vertically?
Also when we cut the lens horizontally the focal length does not change, the focal length of the lens changes when the lens is cut vertically.
How the focal length of a lens varies when the lens is cut vertically into 2 equal parts?
As the lens is cut vertically, the plano-concave lens is obtained, Focal length of each plano-concave lens will be given as, 1F=(μ-1)(1-R-1∞)=-(μ-1)R here R=∞ for the plane surface Thus focal length of each plano concave lens will be double of the focal length of concave lens.
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