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Why should you never rack downwards with the coarse focusing while you are looking down the microscope?
The object on the viewing stage is close to the lens of a microscope. Racking downward risks the lens touching the object and damaging either the object itself or the lens. Before moving the lens down, make sure you can see the lens and the object from the side of the microscope to void the two touching each other.
Why is the image of a distant object formed by a convex lens is real?
Rays coming from distant object parallel to principal axis after passing through the lense converge at focus hence forming a real imageRegardsRakesh Bauraihttp://sankrantee.blogspot.com
What is better for focusing sunlight?
A convex lens is better for focusing sunlight
What is the sequence of reactions when a person looks at a distant object?
The sequence of reactions when a person looks at a distant object is pupils dilate, ciliary zonule, becomes taut, and lenses become less convex. During embryonic development the lens of the eye forms from the surface ectoderm overlying the optic cup.
Why is it that probing a distant past is extremely difficult?
[object Object]
What is refractors?
A refractor is a telescope whose principal focusing element is a lens and collects lots of light from a distant object and brings that light, or image, to a point or focus.
Lens that converges light from a distant object at its focal point?
A convex lens.
How does the focal length of the lens change when you sift looking from a distant object to nearby object?
The focal length of the lens can be changed by the ciliary muscles in the eye due to which we can shift looking from a distant object to nearby object .
Is the image from a converging lens real or virtual?
If the object is more distant from the lens than the focal length of the lens, a real image is formed.
Which part of the human eye bends light rays the most when focused on a distant object?
The lens
What instruments use lenses or mirrors to collect and focus light from distant?
A telescope uses lens and mirrors to collect and focus light from distant object.
Why should you never rack downwards with the coarse focusing while you are looking down the microscope?
The object on the viewing stage is close to the lens of a microscope. Racking downward risks the lens touching the object and damaging either the object itself or the lens. Before moving the lens down, make sure you can see the lens and the object from the side of the microscope to void the two touching each other.
Why is the image of a distant object formed by a convex lens is real?
Rays coming from distant object parallel to principal axis after passing through the lense converge at focus hence forming a real imageRegardsRakesh Bauraihttp://sankrantee.blogspot.com
When the image of a distant object is brought into focus in front a a persons retina the defect is called?
The image of a distant object is brought into focus in front of a person's retina, the defect is called nearsightedness. A virtual image produced by a lens is always located in front of the lens.
What is a telephone lens?
(Miscellaneous Technologies / Photography) a compound camera lens in which the focal length is greater than that of a simple lens of the same dimensions and thus produces a magnified image of a distant object See also zoom lens
What does the lens in an eye do?
Light from a single point of a distant object and light from a single point of a near object being brought to a focus by changing the curvature of the lens. The lens is a transparent, biconvex structure in the eye that, along with the cornea, helps to refract light to be focused on the retina.
How does the lens in your eye change shape when you look at a nearby object then a distant object?
As an object gets farther from your eye, the focal length of the lens has to increase. The muscles around the lens stretch it so it has a less convex shape. But when you focus on a nearby object, these muscles make the lens more curved, causing the focal length to decrease.
