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Their radii of curvature and the refractive index of the material of the lens.
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Lenses are engineered to have specific focal lengths Besides the curvature of the two sides of a lens what determines the focal length?
The material that the lens is made from.
What factor determines the focal length of a lens?
It is determined by the radii of curvature of its two faces.
Whats the focal length of a lens?
The focal length of a lens is the distance from the principal foci to the center of the lens.
Length of a lens is the distance from the center of the lens to its principal focus?
It is called the focal length. It is equal to 1/2 times r, and is positive on concave mirrors and negative on convex mirrors.
How the focal length of a convex lens changes as the sides of the lens become less curved?
Longer focal lengths and less light rays are being bent. :) It's in the book.
Lenses are engineered to have specific focal lengths Besides the curvature of the two sides of a lens what determines the focal length?
The material that the lens is made from.
What factor determines the focal length of a lens?
It is determined by the radii of curvature of its two faces.
Whats the focal length of a lens?
The focal length of a lens is the distance from the principal foci to the center of the lens.
Explain how the focal length changes as a convex lens becomes flatter?
The focal length of a lens is the distance from the center of the lens to the point at which it focuses light rays. The bigger the focal length, the more powerful the lens. ChaCha!
Length of a lens is the distance from the center of the lens to its principal focus?
It is called the focal length. It is equal to 1/2 times r, and is positive on concave mirrors and negative on convex mirrors.
Does the focal lens length have three classifications?
yes, focal lens length has three classifications
What is defined as the distance between a lens and its focal point?
focal length of the lens
How the focal length of a convex lens changes as the sides of the lens become less curved?
Longer focal lengths and less light rays are being bent. :) It's in the book.
What is the focal length of the convex lens?
The distance from the centre of the lens to the focal point.
What will happen to the focal length of a lens if it is cut into half vertically?
When the lens is cut vertically then the focal length of the lens will increase.the focal length will become approx double.
If a telescope has an objective lens of 3 inches what is the focal length?
The size (diameter) of a lens does not determine its focal length. The amount of curvature of the lens does. Citing a diameter for a lens doesn't help us find the focal length. Lenses are ground to specifications that allow short or long focal length. The more curved the lens, the shorter the focal length. You can see this if we specify a given curvature and then start to "flatten" the lens. The focal length will get longer and longer as the lens is flattened. When the lens is flat (has to curvature) the lense has an infinite focal length, just like a piece of flat glass.
Which lens in a refracting telescope has a shorter focal length?
The eyepiece will have a shorter focal length than the objective lens has.
