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What is a focus of the lens?
The distance at which the light rays bent by the lens (or mirror) converge into a coherent image.
What does it mean if an image is brought into focus?
it means the focus allows us to focus the lens to see a clearer view of an object
Image of object formed by a lens on the screen is not in sharp focus suggest a method to get clear focusing of the image on the screen without disturbing the position of the object lens or the screen?
You could insert a second lens in the focal path, between the object and the first lens. The second lens can be designed (or moved) to focus the image on the screen. This is the same function that eyeglasses do for people with poor vision. The second lens, the eyeglasses, are inserted between the viewed object and the lens of the eyes. The second lens is designed to correct the distortion of the eye lens, thus creating an in-focus object on the "screens" of the eyes.
What type of lens will produce a virtual image longer in size that of object?
This is possible only with a convex lens but with a condition that the object has to be placed in between the optic centre and principal focus of the lens.
When does a convex lens forms a real or virtual image?
When object is within the focal distance then virtual image is formed. But when the object is placed beyond the focus of the covex lens ie if the distance of the object is more than focal length then real image is formed.
Eyepiece lens function?
used to focus the image
Do DSLR cameras work without the lens?
NO. The lens is required to focus the image on the CCD sensor.
What is a focus of the lens?
The distance at which the light rays bent by the lens (or mirror) converge into a coherent image.
What does it mean if an image is brought into focus?
it means the focus allows us to focus the lens to see a clearer view of an object
What is the ability to focus the image of an object at different distances on the retina?
the answer is lens. :D
Structure behind the pupil that refracts light to focus an image on the retina?
Lens
How are images formed by a convex lens?
A convex Lens forms a real, inverted image which can be displayed on a screen placed before the lens i.e, opposite the direction the light rays are coming from. A diminished image is formed at the focus when light rays from an object are focus on the screen.
Image of object formed by a lens on the screen is not in sharp focus suggest a method to get clear focusing of the image on the screen without disturbing the position of the object lens or the screen?
You could insert a second lens in the focal path, between the object and the first lens. The second lens can be designed (or moved) to focus the image on the screen. This is the same function that eyeglasses do for people with poor vision. The second lens, the eyeglasses, are inserted between the viewed object and the lens of the eyes. The second lens is designed to correct the distortion of the eye lens, thus creating an in-focus object on the "screens" of the eyes.
Is a a convex lens focus light to form an image at the focal point?
Yes, it does focus light to form an image at the focal point and hence it is used in spectacles.
What is the lens of the eyes?
the lens is what the eye uses to focus an image on the retina.function of the eye lense is is to adjust the focal length of the eye so it can make a real and sharp image of object
When the image of an object is brought into focus in front of a person's retina the defect is called?
Lens
Which lens is the second lens that magnifies the object?
The eyepiece of the telescope doesn't magnify the object, but it does magnifythe real image of the object that forms at the focus of the primary lens or mirror.
