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Okay when the light waves are coming from far away, they are probably almost parallel to each other so they easily converge on the retina due to the lens. Now for nearer objects the light does not easily converge as they are not parallel and diverge away from each other as they move forward. So to converge them on the retina the lens broadens/thickens. Then the light rays can easily be converged.
This phenomenon is called "accommodation".
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Rays of light incident on lens and parallel to the principal axis of the lens converge?
This depends on the type of lens. If it is a convex lens then they converge at the focus on the other side of the lens. If it is a concave lens, then they diverge and appear to be coming from the focus present on the same side of the lens as the incident ray.
What do the lenses on a microscope do to the light that passes through them?
The lens in the eye bends the light so that it's focused on the correct part of the retina. The lens needs to focus it just enough so that we have clear focus. If the lens is not doing its job correctly, people have to wear corrective lenses that bend the light enough to compensate for malfunctioning lens.
The lens-shaped intrusive igneous mass close to Earth's surface is called?
Laccolith
What magnifies tiny objects?
The high-power objective lens; which magnifies the specimen about 40x (depending on the microscope) and the low-power objective lens; which magnifies the object about 10x. If you arn't familiar with the given terms then look them up, there are probably answers on this website.
What is A lens shape intrusive igneous mass close to earths surface?
I believe it's laccolith - NovaNet
What part of your eye uses small muscles to change its shape so that you can focus on near or distant objects?
The lens
How does an eye lens make an adjustment?
The lens is connected to the inside of the front part of the eye by muscle fibres which form a radiating ring around it. When we wish to focus on close objects, these fibres relax, and the lens becomes more rounded and thick, allowing light rays from close objects to be focussed onto the back of the eye. When we wish to focus on distant objects, the muscles contract, pulling the lens outwards so that it becomes thinner and flatter. --> When humans reach - on average - their early forties, the cells making up the lens become harder and less flexible, and so, when the muscles relax, the lens gradually loses its ability to change shape to focus on close-up objects. This is the reason that almost everybody starts to need to use reading glasses at some point from around this age.
What kind of lens is in a cow's eye?
The lens in a cows eye is flexible and clear. The flexible lens is able to change shape which allows it to better focus on objects.
The change in focal length of an eye lens to focus the image of objects at varying distances is done by the action of?
accommodation
What part of the eye uses small muscles to change its shape so that you can focus on near or distant objects?
The lens
What type of lens is the lens of your eye?
The lens in the human eye is a convex lens, but it is flexible and when it is acted on by the ciliary muscle around it, the lens can be "flattened" to change the focus, or, when the muscle is relaxed, the lens can assume a more spherical shape. This is at the heart of the ability of the eye to focus on objects nearer or farther away.
Why is the lens in your eye more like jelly than glass?
It's because to change focus, the eye distorts the lens and so the lens has to be flexible. In camera lenses, the lens elements are moved back and forth to focus - it's difficult to see how that kind of mechanism could evolve; but the lens distortion system is similar(ish) to the way muscles work.
To adjust a lens so that objects can be seen clearly?
focus
Objects are brought into focus on the retina by changes in the curve and thickness of the?
Objects are brought into focus on the retina by changes in the curve and thickness of the lens.
What is the function of the convex lens of the eye?
Convex lens- converging lens: lens such that a beam of light passing through it is brought to a point or focus. This type of lens is often used for close examination of samll objects. Examples: manifying glass, small car mirror, 7-eleven mirror
What does the elasticity of the eye's lens allow for?
This elasticity allows the lens to focus on both near and far objects.
What kind of lens produces images in which distant objects appear close?
diverging lens
