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Which lens bends a light ray more or less with a shorter or with longer focal length?
Wiki User
∙ 11y ago
Shorter focal length lens would bend the rays more. Longer focallength would bend the rays comparatively less.
Wiki User
∙ 11y ago
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Do thick concave lenses have longer or shorter focal lengths than thin concave lenses?
It have a shorter focal length because there is more time for the light rays to come together
Do thick convex lenses have longer or shorter focal lengths than thin convex lenses?
As a thicker lens has more material to do bend the light further it it would have a shorter focal length
How does the focal length of the human eyeball change?
The "eyeball" doesn't have a focal length, any more than the body of a camera or the tube of a telescope have. It's the lenses (or mirrors) in the eye, camera, and telescope that have focal lengths. In the eye, the focal length of the lens changes when the shape of the lens changes ... becoming flatter or thicker in the center. That change is accomplished by muscles around the circular edge of the lens. They stretch the lens to flatten it, and relax to thicken it, when you shift your focus to longer or shorter distances.
A concave lens bends light towards its what?
Focal point.
What is accommodation in physics?
The ability of the eye to adjust its focal length is known as accommodation. Since a nearby object (small dobject) is typically focused at a further distance (large dimage), the eye accommodates by assuming a lens shape that has a shorter focal length
Which lens in a refracting telescope has a shorter focal length?
The eyepiece will have a shorter focal length than the objective lens has.
Do thick concave lenses have longer or shorter focal lengths than thin concave lenses?
It have a shorter focal length because there is more time for the light rays to come together
Do thick convex lenses have longer or shorter focal lengths than thin convex lenses?
As a thicker lens has more material to do bend the light further it it would have a shorter focal length
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.
Why is power is used as reciprocal of focal length?
The tendency to converge the rays decides the power factor. So shorter the focal length converging is tremendous. Hence power is reciprocal of focal length
For a research telescope (with a long focal length) would the thickness be greater or less than for a backyard telescope (with a short focal length)?
Technically the shorter the focal length, the thicker the mirror. But some short focal length telescopes have relatively thin mirrors all the same.
Do near objects have a longer focal length?
Focal length is related to the lens. It has nothing to do with how near or far the object is to the lens or objective.
What would be the effect on magnification to increase the focal length of microscope and telescope?
The focal length of a telescope is directly related to the magnification in that the longer the focal length, the more magnification you get from the telsceope. How the focal length of a telescope relates to the length of the telescope itself depends on the design of the telescope. In a refracting telescope, the focal length is approximately the length of the telescope. In a reflecting telescope, the focal length is roughly two time the length of the telescope.
What is the difference between shorter and longer focal lengths?
too boring to look at next
How tall mirror do you need to see your body full length?
That will depend upon your focal length--how far your eye is from the mirror. At a useful focal length the mirror can only be a few inches shorter than the subject.
What kind of PS digital camera can you get with a wider view than the standard shorter focal length so you can take shots in tighter spaces?
Your going to have to do some research and look at the focal length on cameras. The smaller the number the wider the angle. You want a camera with a small focal length.
How does the focal length of the human eyeball change?
The "eyeball" doesn't have a focal length, any more than the body of a camera or the tube of a telescope have. It's the lenses (or mirrors) in the eye, camera, and telescope that have focal lengths. In the eye, the focal length of the lens changes when the shape of the lens changes ... becoming flatter or thicker in the center. That change is accomplished by muscles around the circular edge of the lens. They stretch the lens to flatten it, and relax to thicken it, when you shift your focus to longer or shorter distances.
